I recently acquired an HTC Blowout Kit.  Based on my (limited) experience of pouches I have seen so far, this is in my opinion the best thought out, and the most suitable design for general use including civilian wear.

The link to the HTC site is:

https://highthreatconcealment.com/viewProduct.asp?pid=9

PROS:

- well built

- well positioned in the lower back with access by either hand (yet flat enough to be comfortable to lie on your back while wearing it)

- interesting and practical "rip off" design

- holds the tourniquet outside

- can hold multiple tourniquets if desired

CONS:

- you have to be thoughtful about how you attach the tourniquet since the velcro used is strong and will not allow you to simply pull off the tourniquet

- once ripped off, the pouch is a little difficult to put back as it needs the plastic to be threaded back into the molle

Some pictures: