As a civilian paramedic and a US Army 68W, I have had a lot of experience of using various tools to cut clothing. Here's a quick video of the rundown of these units. Enjoy!
check out the Leatherman Raptor Shears. They are around 70$ on average but they have a strap cutter, o2 wrench, ring and hard wire cutter, carbide glass breaker and a very heavy, and solid pair of shears. They fold up, come with a pocket/belt clip, and a heavy duty plastic sheath/case that gives you the carry option of keeping it either folded or unfolded while store's in the case.
this vid is really weird: apparently not rehearsed, well laid out, appropriately disclaimed, source qualified, well covered, and to the point. are you sure you know what you're doing? because this is not the way most youtube videos are presented.
