Five foot hose on each side.
Left tank second stage is reversed, so hose leaves the second stage from the left, hose runs back down the tank, and up to first stage, bungees hold hose to tank. Second stage clips off on left chest d ring.
Right side is the same, only a right hand regulator and 5 ft hose goes down and up tank to first stage and held to tank by bungees, clipped off to right side chest d ring.
The hoses stay nice and out of the way. I saw Jill Heinrith set up her tanks this way and I tried it all this year. Works well.
Nothing goes around my neck except if I'm doing a deco dive. Then I take the left hand deco tank reg and loop it around my neck when I am deploying it. Clearly it is positioned unlike any of the other hoses, too, helping to identify it as 50% or whatever.
The photo is from earlier in the year when I had 5' on the left tank and a 7' on the right, while I was fiddling with hose lengths. The leg hand reg is not tucked down the tank as far as I like it now when diving, so the second stage is flopping over, but you get the idea.
Really like nothing around my neck BTW, each hose sits cleanly on the tank. Just slide it back down the tank after clipping it off when switching regs. On the side you're switching to, just pull a few inches of hose up to get enough slack to move your head from side to side without pulling on the reg while it's in your mouth.
And it doesn't matter which hose an OOA diver gets, either. Five feet is five feet (I keep tanks within 1000 psi of each other.)
I am newly in love with this variation. Let's see what morphs up over 2016 lol.