Are you serious, musikbiz22? "Lots of people do" fly with their own rebreathers?
I carry a Hollis Katana BCD, two Mares MR-12 Abyss regulators, a butt-pouch of emergency gear (compass, whistle, and a DSMB with an up-line reel), Force Fins and tropical boots, plus a reasonable save-a-trip kit of...