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Yeah after talking to @Smallfurry, just those two combined together is just asking for trouble so I decided to go against it.
But with supersonic it is non-latex and doesn't lose air pressure, the only fault I have read about is that if you have rough roads around you it is probably best not to use them and the other issue is that the inner tube is very fragile when installing and you can easily puncture them just by installing them and getting a pinch flat right away.
Correct me if I am wrong but light butyl innertubes are worst of both worlds .. no advantage of latex albeit slightly more supple than the regular butyl and less puncture protection ..
Are you not going latex because of carbon clinchers?