/johnny
I wasn't referring to the end of the cord attached to the shotgun, but rather the other end of the cord and where that could end up while using the shotgun.
I'd be concerned that the loop could catch a finger or thumb and prevent rapid use of the gun, or that the end of the cord could become entangled on the trigger, perhaps causing an unintentional discharge.
It's the kind of concern which makes it advisable to carry handguns in holsters.