If you and your wife and kids are out together one has to take care of the kids the other one has to watch your back because if your neling down whiping snot or what ever and your back and gun are open to any one behind you YOUR ASKING FOR TROUBLE if both of you are carrying you have to work as a team . always watching each other back
The shirt can climb when bent down and hang up on the gun exposing it. That is the only reason I IWB now