Not me but there are quite a few Rivs around SLC. I see a couple on Rams riding through my neighborhood quite often (on the bike lane to the UofU), the last time I rode the Cycle SL Century there were about a half dozen others, and there is a Brian (?) in PC who rides a Ram and posts here often.
Mark at Saturday Cycles sold me the most comfortable bike I ever swung a leg over. I imagine that Hillborne came from his shop. We are lucky to have him in town.
I'll be riding my blue Boo on the Edible Wasatch ride Saturday so say "hello" if you're there too.
glen