I have an M2 and really like it. Just about anything from Maxpedition is great and well made. I have most all of the small waist packs (M1,M2,M4) and the M2 is my favorite. It's just the right size for belt carry of small items. I like it because it's not too big but holds a lot of items that I don't want to carry in my pocket. The main compartment has enought room for a small digital camera or compact binoculars. It also has a small pouch in the front for small items (lighter, chap stick, mints). Also has a loop on the side for a pen. When you wear it on a belt, it looks like a small camera case.
It doesn't have belt loop but rather PALS webbing attachments. If you've never seen them, they are made of two rigid pieces of reinforced cordura that are sewn at the top of the pack and snap into place at the bottom. They form loops that you can thread a belt through. What's nice about the PALS webbing is that you can attach the smaller packs to larger bags like the Falcon, making it a modular system.
I would recommend getting the pack if it will hold the items that you want. You won't be dissapointed.
S