Definitely held up my pants!  I got tired of pants slipping down while I wriggled through rafters and worked upside down in awkward positions.  Suspenders ended that problem.

The clips never let loose despite all those contortions.

I would go with five stars since they easily passed a tough stress test, but they are a little hard to get up on the shoulders.  I'd like to have just a little more elastic in back.  So 4.5 stars.