Hi Womble,
to many hoses for me. I use for deeper dive´s (more than 20 meters) a 7 L Ali o2 tank. With an inflator hose at the 1st stage. So i can plump in the manual Inflator at the CL. When the solonid stuck i close the inboard valve and use the outboard ali stage. I use 2-3 80´s Ali stage tank´s with various gases too. All stage tank´s have 1st stages with inflator hose, so i can close the inboard dil stage and plumb in the manual dil inflator any gas i need. I connect a shearwater on my classic inspiration so when the electronics failt, the oxygen 1st stage failt and the dil bottle is empty i can fly the unit maually and use the gas from o2 and dil stages(I think this is the maximum worst case). All stage tank´s have 2nd stage reg´s so i use when the scrubber is flooded. So i use only the hoses i need on my Rebreather. When you can manage all your hoses it´s ok. But for me it is to much.
That´s the problem when you are not a DIR Guy, you must think about it by YOUR SELF.
Cheers Markku
