I thought about this in the past but after asking around bit came to the conclusion that it wasn't worth it. The main problems were (from what I remember) that it might be very temperamental with intercoms and different headsets, because they weren't designed to work this way and also that the mic on them might not be good enough at cancelling background noise. Gaming headsets (depending on the model) can often also be designed to produce a certain frequency range well, typically higher treble for FPS games to hear gunshots and footsteps, and this is not ideal for voice.