Yep I sure did. I managed to resist buying all the tacticool bits I thought I needed and actually went out and shot it some first. Then I shot it a bit more.
I found that although I could get quite good grip in the NEA rails, I wanted to get more consistency and something to help me focus on the new style of shooting for me. The AFG seems to keep your wrist at a natural 45 degree angle, it's small and lightweight. I found that a normal foregrip with your arm stretched forward was over-extending my wrist. It also stops me falling back into old bad habits
The AFG is very comfortable, and IMO well worth the 40 or so dollars. If you don't like it, someone on EE will!