I got my S&S Lemond bike from a Trek exec, who had the brazing and painting done in-house. It is a joy to ride. I wouldn't cut a unique or "rare" frame in half, but I would absolutely suggest using a really good frame. Otherwise what's the point. It's not terribly convenient. The cool thing is that when you do re-assemble, you have your own , dialed-in bike to ride, where ever you are.
My LeMond was not ridden by Greg himself, but was ridden next to him, (not by me). As close as I'm going to get to Greg *';""$&@ LeMond's cycling greatness.
