i've seen a bunch of different setups offshore diving (though never 2 long hoses though that would be camera worthy). Mostly i see people in back mounted doubles). With a bungied Backup reg (length dependent on which post its hooked up to) and a Short primary (27" hose or sometimes a 40") both are usually equipped with swivels.
They usually have a pony or deco bottle slung on one side or the other as well.
This is pretty much a solo only rig since you will not have the hose length to donate properly and make it up the line.
I have some Dark blue on my Drysuit, But i'm in the "Icky" DIR Camp, it makes sense and with a little practice works perfectly in all environments (i'm Cave and Offshore Wrecks).
They usually have a pony or deco bottle slung on one side or the other as well.
This is pretty much a solo only rig since you will not have the hose length to donate properly and make it up the line.
I have some Dark blue on my Drysuit, But i'm in the "Icky" DIR Camp, it makes sense and with a little practice works perfectly in all environments (i'm Cave and Offshore Wrecks).