Please feel free to pm me if you have any other questions, I'll answer what I can.
Lets try it here first, so everyone can read along.
For myself I am not really interested, I prefer 'cheap' first and foremost - as long as that is absolutely foolproof already.
But others might need that information more than me. Not every UTD User receives formal UTD training.
I assume you are using the 'isolation manifold'?
What are the inconsistencies that you're unsure of?
I mentioned one above.
When you isolate, it is not identical to backmount.
You do not have the same benefits when isolating.
In backmount you can isolate temporarily to solve the problem without loosing more than half of the total of the gas volume, you have one tank turned off anyway and do not have to do anything half of the time (and might not even realize the problem before the next valve turn-on-off routine).
Or leave tanks isolated permanently, equalizing every few minutes, something you cannot copy.
In your case you have a fifty-fifty chance of stopping a gas-loss only in the regulators by isolating (and have to turn on the other valve to be able to breathe again), the backmounter can only save half his gas by this action alone.
You also loose half your inflation devices and (if I understood correctly) one of your regulators.
The backmounter does not see any change in those at this point.
The backmounter now has to shut off one of his valves to get to the same point you already reached - you have to turn one on now, probably, or do nothing (but you still don't have access to half your regulators and inflation devices, before some major rerouting of hoses).
I think learning tank-feathering backmounted is also much less complicated than what you face in that situation.
Quite different from backmount standards in my opinion. But perhaps I am misunderstanding something there?
The low pressure hoses are identical to ones on BM and traditional SM. Same with the O rings, the plugs on the manifold again are identical to the ones on Standard first stages.
That's exactly the point I tried to make.
Nobody trusts those ;-)
Hoses are known to fail quite often.
You have several hoses where a blow-off at the fitting or a ruptured hose can be very hard to solve, don't you?
There is no requirement to reroute the QC 6's.
How do you access the second tank when isolated? In case you have an unsolvable failure in the hoses on one side?
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I do not like the idea of 'muscle memory' myself, but I am only a recreational diver.
You do not need any muscle-memory for routine tasks like regulator switches.
But it helps in emergencies, I am sure.
I do not see how you could ever solve any of the tasks required in case of problems connected to the distribution block with muscle-memory and under any kind of pressure.