I usually dive with a wet suit here and have only dived mine a few times with the drysuit, so usually just have a lp hose from the bailout bottle reg, which works fine for me.
On the dil side, I (like to think) I tidied it up a bit by using a small manifold made for me by Martin at Tecme which is similar to the Drager Ray one. I added a CEJN quick disconnect, but this isn't really needed. there is an additional port there that could hold a drysuit hose.
For the SPGs, I have tried 2 things. I didn't like them coming over my shoulder, so tried a shorter hose on an elbow that comes round the side and clips at my waist. Alternativly, and not for everyone, I sometimes dive with just button gauges on the regs., which is very neat, but you cannot check your gas supply.
I replaced the SS O2 hoses with rubber hoses, which needed a couple of 3/8 to 7/16, 7/16 to 3/8 and 3/6 - 9/16 adaptors
I also removed the plastic tank mounts, and just used the metal plate that is part of it to secure a cam band.
It is fairly nice and simple and works ok.
Dave