The more I've seen about this thing, the more ingenious it seems to be. Essentially it combines a bunch of different things uses into one.
1. Simple drum micing solution. Sure you can individually mic your drums and carry a mixer, and a bunch of mic stands and run cables. Or this and a couple xlr cables and you are done? Yes please for a working drummer.
2. E-drum effects on acoustic drums. So it's like an effects pedal for guitars. If you are in a cover band and want some electonic sounding kits, but you are also one of those types that don't like electronic drums because of their look or feel or size or head response or whatever, here you go. This seems to be the primary function. If I was in a corporate function or wedding band, I'd have already ordered one I think. Also if I did a lot of home recording, this is pretty great. Some musicians out there should be drooling at the sonic possibilities this opens up.
3. linking to video and youtube. I haven't seen a lot on this part yet, but it seems to have a bunch of functions for syncing to a video camera feed and recording, then directly uploading to youtube or whatever. Not my bag, but its what all the kids are doing these days.
4. This is the coolest little thing to me - you can take any mp3 song, and it'll figure out the bpm and put a click on top, but not only that, it extends it out in front of the song to give a count in. For learning new songs, this is really cool. I usually learn new songs with my ipad and edrum kit, but when I hit play, there's a lag, and I have no way to know when it'll actually start, so I usually miss the first bar. THat sucks when it starts with a fill.
That's what I understand to this point, maybe there is more. Certainly for the price of a decent snare drum, having all this function in one small thing should be a no brainer. Seems brilliant to me.