As far as you know, the design of this harness forces you to unbuckle your seat belt every time you put it on. As a result, the belt material and the buckle wear out prematurely. Both clip-on clasps are too wide to fit through almost any belt loop I'll be wearing this with. Given this design, the need for two different locking styles escapes me. A simple snap-on seat belt buckle would suffice without the added expense and complexity of a second two-piece latch. This should be fun, especially at the TSA airport when the belt needs to be removed.