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@gbj_tester
Well, up to a point, but...
Carbon teeth are weaker than high strength aluminium alloy (e.g. 7075), but just about strong enough when used with low chain tension, i.e. big chainrings for testers.
Fixie skidding is not a low chain tension activity at the best of times, and CB's ring isn't very big making matters worse.
I'd be happy to use a 54t Fibrelyte on my T3, it would last years because I only do about 500 miles a year, it stays clean, the ratio of crank length to chainring radius is small and I don't do maximal sprint efforts on it. I'd be much less enthusiastic about a 42t ring on my hack bike for reasons which are pretty obvious from the foregoing description of acceptable service conditions for carbon chainrings.
Just weighed a 39t/135pcd aluminium road inner and it's 40g, that's a cheap (Veloce) one, I suspect TA Competition might be lighter. For the sake of 12g, I'd have gone with a metal ring in keeping with the Super Safe design requirement.