Ok here's my experience and the way "I" use it.
The placement of the dump pouch is critical to the kind of shooting you will do.
It can be attached to a belt, tac vest and even a drop leg.
First of. What position will you shoot from? And on what side?
Always on your support hand side. Make sure the pouch is accessible and nothing can get in the way as you try to reach it to dump or retrieve something.
Some guys I know ( specially for static pistol marches events ) like to put it in the front middle just under the belt line. Great but not so good if you shoot prone.
Drop leg? If you shoot kneeling? This will make thing interesting.
I like a 10-2 o'clock position. Just under the belt line. Not too low. Not too high. Nothing is in the way.
THis way I can use it prone. Kneeling and standing if I need to.
I use it for admin reloads or when I practice. SR matches? Yes. No time to #### around putting them back in the mag pouches? Perfect for that. You win precious seconds.
I am not a fan of the drop leg. when running it's hard to put anything inside. And for some firing position it can get impossible to put anything in or out.
I like the MALICE CLIP attachement. Why? Because it is flexible enough to move around when I drop on the kneeling. It falls back on the side. Molle? Perhaps but try to have a flexible link fro the pouch to your vest/belt etc...
This will prevent the pouch to close on you or get folded and close on you.
Link it a way so it can move freely and follow your body position.
Lobster trap style. Adjustable!
Molle and loop attachement psooibilities. Make sure you figure out how you will attach this to you before you buy anything. I learned the hard way.
Any questions? Feel free to ask me.
Cheers.
Get a model that has the lobster trap option. Easy to get a mag in. Nothing will fall.