I don't hunt bugs (wish I could but they don't live in lakes), so that is not an issue to me. I have tried tank-mount and slinging and have opted to sling. Try both. Turn the air on and off with both setups. Deploy and stow with both setups. Then choose what works best for you.
I've tried both. Mounting works better for me. Although I have no need to turn the tank off, or hand it to someone else.