Dan Gibson:What if you have a stuck inflator?
Using this method, you have just made it tougher to quickly pinch the low pressure inflator hose and stop the runaway inflation until you can either disconnect the hose or turn off a post if wearing doubles.
I find that a greater risk.
How does it make it harder to disconnect the inflator hose? Are you suggesting actually trying to pinch off the inflator hose itself? I've never heard of that. Why would I do that instead of simply disconnecting the hose? The latter is faster and total, and then frees a hand.
It's take just a second, two at most, to disconnect the hose with one hand. Obvisouly, the SPG has to be rigged so that it is not in the way of the connection, but that's easy.