So here's a question ... I realize some might want to flame on this, I'm hoping not, I just want to float an idea I had, and get pros and cons. I'm genuinely not a troll. If someone can point out why it won't work or is a really bad idea, I can stop thinking about it, and possibly wasting my money or risking my or by buddy's safety to try it out.
And keep in mind I haven't seen one of these hoses, just the photos, and discussion here.
A perfect long hose (5' - 7') IMO would be that length when you wanted it to be, and maybe 4' when you wanted it to be that. Current hose technology says you have to pick one, so we use 5' or 7', and stow the rest as out of the way as we can. It certainly works OK, but I don't think you could say you want it wrapped around your neck, other than that's better than any other alternative so far. (OK, maybe you do want it wrapped around your neck, fine, but explain why.)
So, could these new 7' Miflex hoses be stowed tripled back on themselves, say 18" worth, to make them 4' long, breathable and reliable and durable with the two tight bends? Stowed in maybe a couple or three loops of bungie, or an elastic sleeve, so they are reasonably tight and streamlined in normal 4' use, but can be pulled out to 7' with, say, no more difficulty or likelihood of glitches during an OOA than uncoiling the current configuration over your head and then freeing it from your can light/ belt/ whatever?
And I'm not asking if it's DIR, it certainly isn't yet. As another poster asked, I'm not even sure the MiFlex is. I'm not DIR or a wannabee, just a long-hose rec diver. I welcome DIR's conservative vetting of gear configurations, and if they reject MiFlex, or the use of it I'm suggesting here, I'd be interested in why. But I don't need to be DIR compliant.
For now, focus less on exactly what the stowing rig looks like; I think something reasonable, including reasonable re-stow after an S-drill, can be designed. I'm more interested in whether the hose would allow this to work.
I just want some initial reactions to whether this would be workable from long-hose divers who've actually used the new MiFlex hoses. Sometimes new technologies make new and better configurations possible.