I like that they hook under my belt.  I like to wear a belt with suspenders so that I can still carry my knife, firearm, side bag, or whatever I need for the day.  The only thing not bringing up the fifth star is that if you take tension off your suspenders, like dropping your pants to go to the toilet, the suspenders come off the belt.  There's no way to secure them to the belt.  The tension of wearing them is what keeps them on.  I'm trying to find something to keep them secure, though.