LOL! That's what hand signals were invented for
So the mouthpiece is just replaced by a threaded pipe? Sounds a lot easier than I thought. If it wasn't for the leaking problem, a friction-fit pipe would seem to allow for reg swapping. I guess that's what the switch block is all about.
I hadn't considered equalising. Could be a problem. Perhaps I can lash something up - I'll see when they arrive. Oh yes - I got a bit ebay-happy and picked up the other FFM!
They'll probably both be extra small or something...
They're both black, not that girly grey colour favoured by some Plymouth-based divers I know...
