Just rode around Lake Tahoe with 1" tires... 72 Miles. You can really fly. I was able to hang with all but maybe 5% of the roadies (who were clearly hardcore). A couple times, an hour would pass and I'd have been drafting in a pack of 8 or 12 riders and never dipped below 24 MPH! Awesome!

That said.... It will make your bike look VERY STRANGE! And, perhaps more importantly, ruin your gearing ratios. I rode in my highest gear (rapped out) for 75% of the ride! Your wheels are much smaller now (2.2 inches smaller in diameter to be exact). It's very frusterating to rap out at 30 MPH on a long downhill, watch everyone else pedal by you with ease, and all you can do is tuck and try not to touch the brakes...

Give 'em a shot though! They'll make you salivate for a real road bike, which by coincidence, I'll be owning 2 of by the end of the month!

Mike