I shared this before. At one time I used a VERY active style with a VERY active multipad for our first song.
I would start with EVERYTHING muted and then bring in one by one instrument whilst introducing it's band member by name.
That solved ALL and ANY false impressions. One can do this often during your performance. The crowd loves it and it makes them realize just exactly what it going on.
Heck, with Ketron with the -R styles, you can announce that you are taking a short break and that the band members are taking over on their own. When you play again, you thank them (band members) and clearly state that you are taking over control again.
There are lots of ways to make the crowd aware what is going on and besides, it is great fun too. Instead of telling jokes, do this to break things up a bit inbetween.
Play a chord wrong on purpose, reprimand the "band" and demonstrate the correct chord to the "band" for instance. Anounce the distortion guitar player just before selecting the multipad and call him by name as you activate the pad. The ideas are endless.
We can make the audience aware of exactly what is going on, but ONLY if we choose to do so.
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Make sure you'll fly forever!