I'm going to try to get a pair of mine all wired up soon, and once I do I'll go to some show I don't care about (or even a bar band...as long as it's loud) and try as many configurations as I can. Pre, BB, no BB, etc.
If these mics end up working for loud shows, and do even better without a BB/pre, then these may be my new go-to mics for deep stealth situations.