I've pretty much decided on a Steamroller... got a line on a nice used one (cream).
I haven't had a bike with drops for 20 years, and I was remembering how I like to ride: with my hands on the brake hoods. (Honey, where's my flame suit?!) Since the Steamroller has no rear brake, and in turn, no old-style brake levers, I'd need to add these parts.
Well, as luck would have it, I have the still-near-mint Ultegra 600 gruppo from my old Trek 660 (that I crashed after less than a week of riding), and thought... hmm... maybe I take the Ultegra levers and brakes and slap both front and rear on the Steamroller. (Assuming the calipers fit. If the calipers don't fit, then I could still use just the levers with the uninstalled stock rear brake.)
I plan on riding fixed, so general consensus is that you don't "need" the rear brake, but... would it be so wrong to do this? Is the reason to leave off the rear brake simply for style? or weight? or 'cause that's how we do things around here and you ask too many questions and go away? or what?
EDIT: IF THIS IS HALLOWED GROUND, AND AN ANNOYING SUBJECT, GO AHEAD AND CLOSE IT AND BANISH ME TO THE DUNGEON. I'M A NOOB HERE, BUT AM ALL TOO FAMILIAR WITH TABOO TOPICS. (GO ON THE MARTIN GUITAR FORUM AND SEARCH FOR THREADS ABOUT "WINGS.")