I was there, I played it.... it is a higher quality kit, and sound then your typical edrum kit out there. Some similarities I think with 2Box ... in that they are loading sampled instruments.... and have gigs of memory. Personally I'm pretty critical and biased I suppose because I have customized my 2Box kit and love the results so am a little tough to please.
What is pretty restrictive with this one .... well, it is pretty much: Use their pads with their module, rack, etc.... it isn't like it is compatible with anything else. Maybe good for them with the phone jacks ... innovative idea .... but also very restrictive in the other sense.