Now, bibs all the time, road & MTB. Exception would be the occational use in commuting where all my old nicks shorts the lycra is worn out but the padding is still OK, so I run them under hiking shorts from outdoorsie/mountaineering shops.
When I first got back into bikes with big kms, I always wore nick shorts, untill I discovered some disadvantages:
Shorts can work down & you sometimes have to yank them up.
With MTB, I always managed to catch my nick shorts on the saddle somewhere yanking them down alittle, bib-nicks avoid this.
The toilet issue with bib nicks really hits home with me when its cold & I've got layers on, & attempting to present the backside in a portaloo. Getting things off is one thing, finding somewhere to place them (away from suspect or offending substances) in the tight confines is another.
Just a bike & a place to ride.