You got it -- I really am this time. My goal is to come as close to just the weight of a mini-U as possible. For the most part, Pitlocks would be just as light, if not lighter, than my stock QR/allen skewers, so the only additional weight beyond that would be the 'extra' seatpost clamp and skewer @ about 40g. I'm not trying to go insane weight weenie, but this is my first real roadie and I am loving the light weight so far. The idea of carrying another lb+ in chain or cable weight is what I'm trying desperately to avoid, and my initial thoughts are the clamp method in the original post might eliminate that need... I'm just not sure at this point if I'm missing some method that would make it not secure.