I got my hoods in the mail today. The tan one is more on the OD side of the color spectrum, so I decided to put it on my BT mercenary vest.
The loops at the bottom edge are velcro'd, and I was able to attach all but two loops to my vest, eg 3 loops in the centre of the back, and three loops on each shoulder strap. The one loop on each side that remains doesnt align with any molle strap, but it doesnt look like it would matter anyway if it was attached or not.
Here are pix of my noggin under the hood, with my 3 different goggles to give you guys an idea of the mask clearance and appearance. (also note that I did not tighten the cord to adjust the hood tight around my head, but it looks like it could be useful in some situations.