I just got my module a few hours ago, so this really IS just a first impression. Let's just say, I'm underwhelmed. The sounds are ok, I guess, but no better than my Sonicell IMO. The OS is a breeze and very intuitive if you've used Rolands in the past. The styles, IN MY OPINION, are boring as all getout and leave no doubt that you are listening to an arranger. I like the 'dated' styles on my old PA1x Pro better by a 5 to 1 margin, but I'm sure that is because of the type of music that I prefer, which Korg does a much better job of. It seems to work fine with my FC7 pedal but it must be assigned correctly first. The pianos are good, but again, very similar to the ones in my Sonicell and Fantom G7.
Would I have bought it after a 1 hour checkout in the store? Probably not. Will I unload it? Probably not. I will probably use it with my VP-770 (a far more capable instrument than most people know) to support a female vocalist I work with. If I don't use the arranger functions in this role (just WAV's and/or MP3's), I could use the Sonicell or even the VP-770 standalone. Both, but especially the VP-770, handle file playing as good or better than the BK7m.
As I listen more and/or come across more 3rd party styles (styles being the biggest disappointment for me), I may change my opinion, but for now, I'm thinking that that grand may have been better spent towards Bill Lewis's B3

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chas