Once, six years ago, and I think about it all the time. Public land sprinkled with pockets of private land and their landowner tag hunters. Western CO, big steep glassing country mainly scrub oak and P-J. Second or third rifle elk season, an OTC bull unit. I had an elk tag and a bear tag in my pocket, we had seen a jet black bear in this drainage a couple days prior. About 3-400 yards out a solitary black blob walked out of the thinning oak brush and I drew up to get a look through my scope. Turns out it was a dude in a jet black jacket. I put the rifle down and just watched through my binos and cussed.
A minute later his companion came out of the same oak slope and they just chilled on the ridge and looked around. Both had rifles. I assume they were also elk hunting and had just stashed their orange for the day. I bugged out of there.