Bikes like these don't do anything I can't do on my Rivs, so it isn't exactly revolutionary. The disk brakes are cool though.

One and only bike? They are really versatile, so sure you could certainly use it as a one and only bike.....Unless you are really into time trialing or something.

I think these kinds of races are pretty cool and would be fun to participate in. Lots of gravel roads around me, so the extra tire width really helps out and it also makes it really comfortable on the road. All in all, great bikes.