Correct me if I'm wrong but the pictures make it look like an Air 2 integrated octo-inflator type device.
I don't think they really streamline you. Rather it's a convenience of not having an octo. I used to sport a Sherwood Gemini, and I've used ScubaPro's Air 2.
I've seen plenty of other types of Air 2's, Air Controls, Air 3's and Safe Seconds.
I think they're heavy in comparison to second stages and inflators put together. As such they'll always drag below you and strapping them down is not an option for safety reasons. If you hug close to the bottom there's a good chance it'll drag in the sand unless you keep your hands over it. That could affect your trim depending on how you usually position yourself when diving.
For me, when I was doing data collection or photography, my Air 2 would always bump into the bottom or on the rocks around me. Not happy with it over all so I switched back to a standard inflator (tied down with a bungee loop) and a Bungeed backup. I've used regular octos and found that securing it with a loop of bungee (home made and hand tied) to be the most effective way of keeping it secure and still allowing easy access. Just grab and yank, the bungee will stretch and you have your octo.
I chose to attach it to the D-ring on my waist strap. If you have the space, attaching it to your left shoulder D-ring will get rid of that 40in hose that "flaps in the wind".
If you decide to get an Air 2 you should make sure your primary hose is at least 32in in length. It'll make OOA shares doable but very cramped.
A 36in hose will be bear minimum to have a comfortable close ascent but I would strongly recommend a 40in hose on an Angle Adapter (NOT A SWIVEL) or even upgrading to a 5ft or 7ft hose if your BC pockets don't get in the way.
With the Mare's icon though, unless you dive without your integrated pockets, you'll have too much bulk in the waist to pull off a 5ft or 7ft hose wrap.