finally got to test out the new regs this weekend on my OW cert dives. however i didn't get to use the long hose as the instructor and 2 others from the LDS insisted that the short hose was to be the primary and the long hose is the backup. and also the long hose routing won't work with their way of doing reg retrieval etc. so i just used the short hose. but the regs breathe great. only issue i had was losing the din oring between day 1 and 2.
Wow!.....just...wow!
It's so awesome when there are so many "unique" configurations. Random crap, just for the sake of being unique and special.
On a serious note: I would recommend doing your class, in the standard recreational rig (donate the octo).
Then, after you class, try and find someone that correctly dives a long hose set up, and ask them to go diving...perhaps they can give you a proper demonstration. It really becomes much more clear when it is demonstrated for you.
Not to bash your instructors.....they obviously don't know, and gave you incorrect information.....there really is a lot of bad information out there......such as, "the hose get's wrapped around you neck." Always entertaining to hear that one.
They should have just told you that they would prefer their students be in the standard recreational rig.
Anyway....moving on.
Just finish up your course, and progress onward from there. When the time comes, consider WHY you want to use a long hose configuration, and go forward with that in mind.
Enjoy your class.