[kawika]

How is the internal space and set up, user friendly?
It's pretty user friendly but not a whole lot of space. Very limited on what you can carry. If your going to use a setup like this make everyone else carry their blowout stuff, that way you can hold only advanced treatment stuff. Your not going to be shoving kerlex into this thing by any means.
3. Is there enough room or location for a BVM?
Not really unless you sacrifice room for more important stuff. Recommend attatchment to the outside if you do go with this setup

Ill look at it again and post responses to the rest of your questions, thats all I could remember offhand. Nobody in my company uses those bags for medical stuff. They are however the perfect radio bag. Perfect size for a 117 with additional space for handmikes, phone etc.

It's to small to really be of any use, and cumbersome. Your either on a truck and you should pack to the high heavens since you have unlimited space. Or for DA something like a hip belt with pouches attatched to that is much much better. That way you can more easily take it on and off. When its on your hip its way easier to carry than something on your back which you probably already have alot of (camelback in addition to your bodyarmor bulk). We were doing constant helo infils and the belt solution was much better for us, although we had 10k+ movements after the helo infils. If your doing CSAR or just riding on a helicopter you might as well have a big bag that actually has space for things you need. This bag just doesn't have enough of it unless you defeat the purpose of it by placing like 5 pouches at least on the outside.

Oh and I forgot, if you do go with this bag change out the straps. They are really thin and will cut into your shoulders about 0.5 seconds into movement. We took straps off whatever random blackhawk bags we had laying around and had riggers sew them on.