The ruck trainer is awesome. I love it. The quick release straps were threaded backwards when shipped. When I first threw on the ruck the shoulder straps were loosening on their own because of the weight of the ruck. No big deal, but could be problematic for rookies.
Fits more than it looks like it can
Definitely a great pouch. Its roomy for all the necessities but still relatively small. Its obviously bigger than the footcare kit and that kit can fit a lot of stuff. The MOLLE is great to have, I got it attached to the back of my backpack but you can also attach it to your belt (if its got MOLLE). I fit tons in it. Definitely buy it!