cycling bibs

Anyone use cycling bibs here? They feel pretty snug around the stoma, so I dunno if they're a good idea!?! Looks like they would trap in heat/sweat, but at the same time keep everything in place ((shrugs))

I've been using cycling shorts for years, but having to wear regular shorts over top to hide the bag is slowing me down...they're not very aerodynamic, hence the bibs

Thoughts?

Matt