Originally Posted by Svr
Have you checked to see if a 22.2mm (1") quill stem will tighten up properly inside the steerer tube? The inside diameter of threadless steerers are rarely consistant. It would suck to have it threaded only to find out it's not usable.
I might be being totally ignorant as I have never actually played around with threadless setups, but if a quill will grip the inside of the steerer, is there any reason you can't just cut the tube at the top of the headset and use the stem as if it was a threaded system? Provided you're happy with never being able to use it threadless...