Lately managed to finally release CX rings with XX1 style tooth shape. This gives you basically opportunity to ride without bash and chainkeeper.
For now only 42T in 110 and 130BCD but in few weeks also 38T in both diameters.
Just to make a note. Such design will retain the chain really well in almost every condition. But in very sticky mud there is still possibility to drop it (due to clogging up the spaces in the ring). But in all fairness in such mud everything else fails as well:)
http://absoluteblack.cc/cx-rings.html
Chainring does not require clutch rear mech to work properly. But please remember about shortening the chain to single setup.

