Chest Mounted Rebreather, Hose Routing, and Regulator Fitting Sides...

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Hi all, the only house routing I've ever used is the following:
RH Tank Long Hose behind neck clipped off on chest
LH tank short hose behind neck on necklace

Easily identified by long hose has a straight fitting coming out of the regulator and short hose has a 90 degree fitting coming out of the regulator, both of which exit the right side of the regulator.

Why am I here?

in April I am going to get O2ptima certified - that means I will be chest mounted rebreather certified and having hoses routed across my chest will no longer be an option. So, I am looking to practice getting myself comfortable with the new configuration before then. Please advise me on some of your hose routing. I almost think double long hose is better here.
This is what I do: Short hose routing options
Because it does not interfere with the ChOp, and for these additional reasons:
 
This is what I do: Short hose routing options
Because it does not interfere with the ChOp, and for these additional reasons:
Basically, you jut put the reg you've been using on your right tank on the left instead and vice versa. Now you just have to pull out a smaller amount of long hose run it around the back of your neck and clip it off to right chest D ring (bc RB), then pull out a small amount of short hose and run straight up and over to wear as necklace (or clip to right chest D ring). No hose crosses your chest, only 1 hose behind your head, and nothing interferes with the CM RB.
 
Hi
I don't get why you want to switch side.
The good point of CM unit is to be able to add them to any set-up. Why would you want to change that?
Just use the left tank as Dilout with second over your neck and in the necklace (even with a BOV, you want a BO reg on necklace and not clipped or on the tank).
If the Dilout is enough for BO and you are in mix team, just add a long hose loved on the tank and going also behind your neck and clipped with a breakaway on your right d-ring or just left on the tank.
If you want an xtra BO on you right, just use a LH left on the tank or clipped on the right d-ring.
Nothing cross your chest either.
 

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