if you are planning to wear it under your arm beneath a sport jacket, you might want to look into some of the slings that are used for concealed carry of a handgun. Those might give you an idea of what can be constructed. Also, there are several companies that make clothing for concealed carry, including sport coats that are designed to hide an under arm holster. One of those jackets could help you get the 722 in with less obvious buldge under your jacket. Of course, if venue security knows enough to look for one of those style of jackets, you might get extra scrutiny at the gate.