I love 5.11 tactical pants... they look good and the elastic waistband works extremely well with smartcarry. I own a couples pairs and plan on buying more.
I also own a 5.11 vest and wear it from time to time when I carry my Beretta 96 (sometimes I wear an untucked 5.11 shirt for the same purpose). As for the vest screaming gun, I had occassion to go to a sporting event while carrying (this is legal in my state), and security was checking for weapons at the door. They didn't think twice about my vest and just waved me through, despite making several other people lift up thier sweaters and seatshirts to expose thier belt lines.