So just what are Reaction Enhancers compatible with?  ONLY move-by-wire?  Then why on earth would it read that they are compatibility with other initiative boosters?  Silly!

I believe they changed the wording in the errata or whatever its called making them non compatible with synaptics and wires. Besides unless I'm wrong reaction caps out at 6 (9) for every race unless you go with exceptional attibute and a 3 month gene therapy which would make it cap at 8(12) which is insanely expensive and possibly impossible in CG so I don't see it as a big issue anyways.