It's the Quick and Detachable part that's the downside. Just think about if for a minute....then ask yourself what are the torque spec's for QD style rings?? There aren't any.... So how to you torque them exactly the same each and every time?? You don't, is the answer.
So if your not going to be taking your scope on and off, as an in field expedient, then you don't need QD rings....