You're the Swift historian, Patrick! What advantage is Peter's steel frame supposed to have over the current Swift, aside from steel vs. Al? I think it's supposed to fold up a trifle smaller. Anything else?
I thought about getting an aluminum frame from Peter after the introduction of the Xootr, but I am a 220 pound clydesdale who rides singlespeed and fixed gear on Portland's hills, and I have trust issues with aluminum frames!
I'm even bigger than you, and likewise mistrustful of aluminum - tho aluminum DC-3's have been flying since the 1930's. I just got my Swift. Actually, I just got it for the second time. I had to mail back the first one due to a defective frame. By way of apology, Peter said that he will exchange it for the steel frame when it comes out.