I split the singing duties with our 'lead vocalist'.
I don't have a headset mic yet so I use a boom stand positioned behind my right shouler. Keeps it from interfering with hand motion.
Drumming and singing is hard and probably takes a little more practice. I get the drum part down and then practice the singing. As long as everyone nails their part it seems to work out pretty good.
Audiences get quite a shock but think it's pretty cool!
I live in Japan and haven't seen any singing drummers. Pretty rare.
Keep at it!