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With a clutch derailleur (plenty available for 10-speed SRAM) I think you can get away with it for sure. I've currently got a single (non-NW) ring with a 9-speed non-clutch XT mech on 11-40 and it works fine. NWs are nice though, the chain never comes off, whereas it has once or twice on my single ring setup.
Having said that you wouldn't want a 32t ring for a road bike I'm guessing...
frankenbike
Cheers mate - I mean these could work right? How necessary is the narrow wideness really when you have a derailleur for tension and tall ass teeth on the ring?