*Floater*
Contributor
Luc Dupas:It's sounds nice indeed... but I'm simply wondering if you can do this actually faster than simply reaching for your secondary with your hand? Let's assume an emergency situation... your buddy is signalling you in distress that he's got a severe OOA... you look at your buddy and you keep looking at him all the time, you don't want to even get him out of your sight for even a split second... with your right hand you take your primary from your mouth and hand it over to your buddy, still looking at him all the time... would you manage to get your necklaced secondary in your mouth without using your hands and still keeping an eye on your buddy??? Grabbing your secondary (necklaced, or AirII on the corrugated hose, or a regular octo mounted at the left) with your left hand and putting it in your mouth only takes a split second, and you can do this "blind" while keeping an eye on your buddy all the time...
BTW... my UW camera is attached to my BCD via a small rope and snap hook, as well is my lamp, etc.... so I can always drop whatever I have in my hands and have my hands free to help my buddy!
Using my hand is easier and that's what I usually do. If you retrieve the backup with your mouth then you need to fumble around a little bit to get it to go in and also turn your head down (break visual contact with buddy) while you do it. I'm not saying it's a superior method to use or absolutely critical to know, just that it's a nice option or convenience in some situations.