Why move the AI to a hose? Now it can flop around and hit the tank and cause potential damage. I am against the idea for what its worth.
Because it reduces the risk of the clueless and careless of using it as a more convenient handle than the cylinder valve. It is easy to secure it to the cylinder, BC, or harness. A longer HP hose can also let you position the transmitter closer to your wrist mounted DC, which can improve signal strength.