Looking for experience

Has anybody ever adapted a 20 oz C02 bottle and regulator to fit a ball lock quick connect?

My lhbs sells a 20 oz paintball tank-to-regulator adapter.

I have seen those, but there is no way to turn off the gas short of unscrewing the paintball tank.  I built two myself using a paintball fill adapter and some brass fittings to connect to my STD regulator.

I bought a Jak Pak, which is supposed to be used as for portability of pneumatic tools.  It fits paint ball tanks and has a regulator.  I have never actually used it, since I can’t get paint ball tanks filled in the city.

I have all my lines set up with quick disconnects, so my plan is to do the same with the Jak Pak so that I can change out whatever fitting I need on the line.

I think it was like $40 on ebay, which is a deal compared to the Leland regulators you can get at some on-line homebrew places.