Well, given my login name, i've given it a good go... Had a race OR but bought a race lite with welded disc mount second hand. Works fine with magic gear of 32:18, 36:18 or 40:18 depending on terrain and how good my legs are feeling! Tight with a brand new chain - you have to either put the chain around the sprocket and chainring with the rear wheel in place but just fowards of the dropout then force it slighly into place, or wrap the chain around the sprocket but not the chainring with the wheel in place correctly then pedal the chain on. After a single ride a new chain has usually stretched enough that the transmission frees up nicely, but probably worth storing with the chain not on the rings so there is no force on the bb/hub bearings. For me this lasts about one winter before the chain stretches too much after it's come off once (or before, when it seems loose, to play safe), swap for a new chain and you're sorted! Allows me to run discs, qr and singlespeed with n fiddly ebb/horizontal dropouts/slotted dropouts and disc mounts.
ian