on the bike i'm building up, i have a threaded fork, and i'm using one of those quill-to-threadless adaptors to mount a cinelli alter stem - I haven't had a chance to ride it yet (still waiting on a bunch of parts), so I don't know if it'll suck or not. it looks like it'll work out fine, though.

anyway, it gives you a lot more stem options if you're riding a threaded fork.