I don't use a vest because of the weight always being on my shoulders. When mounting the gun, your shoulders have to rise a little. If you have 2-3 pounds of shells in the pockets, you are lifting the weight every time you shoot. Multiply that times how many shots you take & it really adds up. If you shoot a 100 singles, 100 caps, & 50 pair of dbls(double the weight), you are lifting somewhere between 750-800 pounds. The belt & pouch combo puts on the weight on your hips. I just know I'm not as tired using the pouch. Butch from Pgh