On my sidemount rig, I have a short hose on the tank on my left side coming around my neck and to a bungeed necklace, also zip tied to the necklace. On the right side I have a 7 foot hose with the extra tucked into tank bungees, it comes around my neck also and is either in my mouth or clipped off on a shoulder d ring when I'm breathing off the other tank.
I can see an OOA emergency or S drill not being a problem if I'm breathing off the tank with the long hose, the problem I see is what if I need to share air while I'm breathing off the left side tank. If my buddy suddenly needs air and had to grab for a reg, the one in my mouth would be on the necklace and a very short hose, the right hand tank reg would be inconveniently clipped off to the d ring. In a low or no vis situation in an overhead that might make it even impossible to find for him.
Should I remove the zip tie on the necklace so the short hose can break away so he can grab the one in my mouth and then we can deal with unclipping the long hose while he suckles on the short hose and I hold my breath?
I guess I'm asking how you guys handle air sharing or OOA's with a clipped off primary (long) hose?