Dunno about Technic yet, but with Tekkit 3.1.2:
Server: Updated to IC2 1.97 r7. Fixes Multiworld issues. You can now set both wrenches into perma-lossless mode server-side (Port by muCkk)
Thing is, I can't find out how to do this in the configs. Once that is figured out, then I'd imagine that it can also be done for Technic whenever it goes to the same or a later version of IC2.