Anyone on this thread singing leads or back-ups as you play with ear-protection? I mainly play loud, hard rock/metal. I've had trouble hearing monitors/other vocals and/or just self-monitoring my own vocal volume with my molded plugs with -25db or even -15db inserts. So I wind up using foam plugs I tear in half (especially on monitor side) so that I can better hear vocal frequencies. Any tips or similar experience?