All of my OW students learn on a 7' hose. I don't believe that's annotated anywhere. So, you would force them into a system they weren't trained on??? Kinda "wow!". That's mindless bureaucracy to me. I've had two students move to a more traditional hose routing without the need for any additional training. Can you cite BSAC literature that requires you to see the syllabus for a long hose??? I would really like to read that and any justification they have for it.
I've only seen one person, my best friend, that dives a long hose without looping it around their neck. 6 months before I took cavern, I put one on my rig (H-Valve) just to get used to it. I was on the back of a boat, trying to figure out how to loop it. The captain sniggered a bit, and deftly showed me how to loop and deploy it. 3 or 4 dives later, I actually had to deploy it while on a down line. If I had any doubts before that they were gone. The donee was below me on the line and the long hose made it easy. In cavern, I learned the best way to deploy it as well as other incidentals concerning its use... while in a cavern/cave. I didn't really need to know that in OW. Now, I do believe that everything you learn in cave/cavern or any overhead is useful in OW. The converse is not true.