My riding buddy just got the CG, but it's not like she had much choice, being 5-1 and 94 pounds. She can barely touch the points of her toes with the front forks moved up in the triple clamps and all of the preload taken out of the rear. She certainly can't have more than a 1/2 inch of sag when she sits on it. We'll be looking to have a new spring made for the rear, both slightly shorter and a little softer. Right now she one foots it, which isn;t a problem for her, but backing the thing up is impossible.
I have to say though, I can't imagine anyone taller than 5-5 or so needing the SG.