Gun vests are as diverse in application and gun holsters are.   There are various types of vests for specific missions and some of the best ones to get are the ones that you can configure yourself.   Not everyone needs to carry 12 gun magazines for their M4 Carbine and most of that would even be considered extreme for a combat soldier.   I am a big fan of leg holsters because my primary fighting weapon is an M4 rifle and I don’t like the idea of putting a handgun up on my vest because it’s one more thing for my rifle sling to snag on.   Eotac and Woolrich Elite vests suit me better because they are softer and don’t have a holster for retaining a firearm, it’s all magazine and gear and the pistol magazine holder is inside the pockets, not outer pouches.

I am also not a fan of vests that carry tons of rifle and pistol ammunition, it’s good to be able to carry a backup handgun incase your primary goes down, but I’m more inclined to bring a spare bolt and firing pin so I can replace most broken parts on my M4 in only a minute.   Having 2 or 3 Wilson combat magazines for my 1911 is all I need for most practical purposes.  If I need more handgun ammunition than that, I might as well pack a few grenades and be able to call in an airstrike, too.  If you are wearing a tactical vests, in my opinion, it’s cross draw, or it’s a leg holster for your handgun.