I am not real sure my corrugated hose being routed 6 inches lower with the inflator in the same place will really make or break the situation. .
If you're face down in the sand, at 130' of not-so-great viz, I'm going to come on top of you, reach for your left shoulder, and try to find your hose. It won't be routed over your shoulder. In short, if it's not "where it should be" I'm not going to spend a lot of time trying to figure out where it is. You're gaining nothing from routing it as you do, as near as I can tell.
As for no real Tech Dork would try this ... TOTALLY disagree. Tech diving was built on innovation and outside the box "personal preferences." What do you think other divers said when guys showed up at the caves with 7' primaries looped around the necks, or full 80 slung on their sides. Better yet, a combat diver with his doubles turned upside down. And too that point, what if you were helping an unknown side mount diver, his inflation equipment would be much more foreign in a stress situation trying to find inflator a then where mine is.
Absolutely not, because I would notice immediately that he was a side-mount diver and know where a side-mount diver's inflator is.
Even early innovation in cave diving was done among small groups of a close community who were innovating and standardizing together along the way. We're further down the road than that now. There are a few different "standard" ways of doing things. Personally, I would not want to be the outlier on somthing like this when there is zero benefit as far as I can tell.