@LordCirais@SnowFoxx There was a guy at my university who used to sit in the electrical and computer engineering student lounge in his collar all the time. He had a tag on it with his fursona name so it made it easy to recognize him from the school's furry Discord. He was the first other fur I met irl.
I don't know what most people thought of it. It tends to be a pretty open minded campus, lots of guys wear nail polish for instance, and I know a few students who have publicly suited on campus, including my BF, but to wear a collar publicly regularly takes more self confidence than I have.
@devkitsune@LordCirais@SnowFoxx it probably depends on where you are, but even in not the most open-minded of places, wearing mine around town regularly for a couple years now has only netted compliments.
be safe about it (probably sorta location dependent), but if it makes you feel good to wear one, and you own it, go for it! most people will either say something nice, or not say anything at all.