2nd day update:

After spending lots of time updating the OS, then practicing some much needed "keyboard distancing" (to clear my head) I have reached a few conclusions.

1) AJ and his colleagues really do have the needs of the end user at heart. They carefully chose generic, useable, styles and sounds (with great detail, and expression), rather than fill the instrument with vast choices of "maybe I'll use this" type sounds. This makes it appeal to a more traditional type of musician, like me. I play the hits. This is a PLAYERS instrument. In a band, I'd have the best players I could find, and they'd most likely use their favorite, most versatile instruments. Ketron has provided that approach to their styles. There aren't 1000 EPs, and 500 basses. There are LOTS of choices, but the choices represent the cream of the crop in their respective categories. I will focus on bread and butter sounds for almost everything. I want my "band" to sound like a top notch group of players who don't need to switch instruments for every song.
I've said many times that my priorities are vocals-bass-drums then everything else, and I have to be honest - the Ketron bass and drum sounds are among the absolute best, if not THE best. I have played. I still love the live sound of the Korg PA4x, and the SX900 sounds fantastic as I have used it, but there is something extra "in your face" about the Ketron rhythm section. I feel like I have the Wrecking Crew in a box. This makes me sing with a confidence that enhances every performance.

2) I've made lots of decisions based on size, weight, and appearance (wives?? ) ... and I seldom place sound quality first. Everything made in the past 10-15 years sounds pretty great. It's not that I don't prioritize sound quality, it's that most of the audiences don't recognize the subtitles of my decisions, and as long as my vocals sound the way I want - the overall mix just has to support that. It comes down to this: if I pick the right tune, play it reasonably well, and sing it from the heart - the people will respond favorably. That's been my mission statement from day one as a performer. I have many tools to use as I perform my craft, and lately, guitar and tracks have been my go to rig. This allows me the luxury of playing the SD7 at home until I designate it's place in my arsenal. That being said - I absolutely love the sound, and I am enjoying playing it. Some of the navigation is not what I'm used to, and some of the limits are making me think more than I like while playing, but all in all, it's a very positive experience, and with time - I'll become more comfortable.

3) Let's talk bulk. In my regular work, I set up twice a week. Once for 4 days, and then a one nighter. Size isn't an issue at either venue, and the weight is manageable while I'm still a young stud. (ahem) If work goes back to normal soon, and I am fortunate to have the same schedule, I may choose to start taking the SD7. There's one big perk that Ketron offers to me, and that's a dedicated guitar input that can be used simultaneously with the mic. The on board speakers are strong enough to handle this load, and having the option of using my keys and guitar on the same job appeals to me.

4) What about the mic processor? This is the most paramount of issues, as you know for me. There are a few hoops I had to jump through to buddy up to the harmonizer, and I'm still on the fence as to it's potential, but I'll say this ... I think it's possible that I can tame the beast, and bring just the keyboard, guitar and an ipad and do the job. I will use a small passive mixer to merge the guitar and iPad into the same input. AJ - if you're listening (and I know you are!) a stereo aux in would be a nice addition to this instrument!. Maybe reconfigure the aux out jacks? Just dreaming.

5) Conclusions (after 2 days):
I want to give this a fair chance. I already love the sounds and styles (I use very few)
and it came to me in a financially attractive way. (traded an i30HD plus some $$ for a Tyros2 - traded the T2 for an EA7 - traded the EA7 for the SD7 plus a teeny bit of $ for shipping. I'm into this at a very favorable cost, and I want to see where it goes. My best guess is that I'll be out of work for at least 1 more week (maybe 2?) and I'll spend that time getting to know the instrument. I'll make some recordings, post it live, and we can all get to know it together. Stay tuned my friends ... the music will not be silent!