Good video, the more I see the side mount configuration the more I like it.
Yes, it is very nice to dive, once you get it, it by far the most comfortable configuration.
However, don't let people talk you into the it is superior, and oooohh sssosooo easy. In reality SM is complicated and you do need a good instructor to show you the details SM in OW from a boat and a few waves.... is a real challenge.
On top of that a drysuit and dry gloves and even the most accomplished diver will have loooootsss of fun.
Multi cylinder is difficult. and swimming around with 6 cylinders is even dangerous...
Now, you know what you are upto....;-)
Dont misunderstand me...it is worth it ;-)