I've used one for 12 years with great success. I've worn it hundreds of times, and if specific conditions don't put me in a Ghillie suit, the 3-D Vanish Pro ASAT suit is on the job.
The multiflora roses, blackberry bushes, and time have taken a toll on it, and the pattern has faded some but it still quite effective. Still, I bought a backup suit because I never want to be without one.
I wear XL in most clothes, and an XL 3D ASAT suit is OK when it is warm, but fits comfortably over warm clothes later on. I've even used it with a t-shirt and shorts when it was 80 degrees out, and the mesh fabric helped keep me hunting.
The reason I chimed in on this thread was to let you know of a change in my backup suit. The waist/crotch/rear area is much bigger than on my first (makes me wonder if it is a mis-marked 2XL). If I pull them up so the legs are normal length and the crotch is close, the waistband is up around my chest. I look like a camouflaged Steve Urkel! Folding them over works OK, but I sure wish they fit like the Old Faithfuls.
Just thought you may want to watch for it or ask a few questions if you order some.
Daryl
PS- I use an arm guard, too, and it all works out great!