In our opinion, Poseidon's choice of low-pressure hose length for the DSV/ADV/BOV gas supply is much too long. For many divers, this will cause the hose to "bow out," creating unnecessary drag and tug on the mouth. This makes for an uncomfortable dive, particularly in current, and is made even worse because many divers also wrap the HUD wire around the same low-pressure hose. Some experienced Poseidon divers choose the shorter length of a {22 in | 56 cm} flex hose and a 70° swivel adapter with hose routing directly over the shoulder close to the neck, feeling it is more comfortable with less drag and pull. You can just as easily wrap the HUD wire around the loop hoses, it actually works better and is much quicker to wrap. See a picture above of our Lisa diving with this alternate hose routing.
Many CCR divers who are going to extreme depths prefer to have a slide valve shutoff on any ADV and/or BOV in the loop. You can easily add a shutoff to the Poseidon ADV/BOV functionality using the alternate hose routing configuration with the added benefit that the shutoff slider is located immediately adjacent to the mouthpiece where the closed-circuit/open-circuit switch is located. However, slide valve shutoffs also increase the risk that the diver will inadvertently shut off the gas supply to the ADV/BOV. If you add a shutoff, update your checklist to account for the presence of another valve. Dive Gear Express does not recommend inline shutoffs for sport CCR diving.