I mainly use it to feel the drums, I have both snares and kick drum going through it, its perfect for those big festival stages when you're really far from each other, so I can get a good feel of what is going on!
Good idea to feed drums into it in your situation. Distance can cause major timing issues due to sound delays. With us and using Avioms, I can mix in whatever I want into the ear buds. That said, I would much rather play ambiently like you do.