I would if I had the cash to invest in a CCR, in a heartbeat no less
It doesn't have to be outrageously expensive, if you're creative.
http://home1.gte.net/doctrbob/CCO2.htm
Once I'm set up again, I'll be tootling around the home shop, making some bits & pieces I need. I'm sure it'll scare the bejeezus out of a few people, but it ain't rocket science!
Looks like a couple of Dr. Bob's units cost under $200, not counting the tank(s) & regulator(s). If nothing else, the CEDU pages are a good laugh. So far, I've burned a couple of grand in parts and pieces.