I've been biking for most of my life and honestly indoor cycling has always seemed like a terrible idea to me. Spinning classes are for girls, there's no way they could be a good alternative to a real bike. Well the other day I took a class here instead of braving the rain and I might be a completely changed man. I found myself working harder than I would have on the road, so this might be an excellent training mechanism for road riders. I also like the overall "feel" of this place...they definitely seem to embrace their community, plus it sounds like they're going to have a presence with a lot of the local road rides.
Definitely worth checking out if you're usually on the road but looking for a different way to train, or just a good substitute for a crappy day.