Is that true? I haven't used a BC with a shoulder dump in a while, but it always seemed pretty fast to me. Especially since you can usually just tug the hose faster than you can get the hose out of the loop that's keeping it close to the strap (if there is one), lift it up, and get your hand positioned so you're pressing the deflate button (not automatic for newbies; I still sometimes had to feel around to figure out which button was which when I was new and renting gear.)If you need to dump really fast, the easiest way is probably to go vertical extend the inflator hose up and press the deflate button