They are tighter shorts, but they fit well and are stretchy. The extra ergonomic crotch area helps them fit nicely without hurting your goods. One thing i'm going to mention, that may be a little too much info for some... is that I got the good ole' swass butt when riding. Sorry for anyone walking behind me and had to see the big wet spot on my butt... Scaring women and children one stop at a time.
I think the biggest thing this does is offer Peace of mind. I really don't know if it deters people from getting in, or if a ton of airport workers have a master key somehow. But it made me feel a lot better having it on the bags. I like that it has a loop so I could lock multiple zippers with one lock instead of just the main compartment.