my backround: 4 1/2 yrs 90% nogi. been a blue belt in nogi for over 3 I cross train now and again at a Gi school. I talked to the instructor( known him for a long time) and said I wanted to be respectful and wear a white belt in the Gi, he says yes, I should wear the white belt. Now thats all fine cause everyone knew my skills and wasn't a big deal. Now I've been doing alot of traveling and drop ins and do as much Gi as no gi and I wear a white belt. I tell the instructor my history blah blah , don't really want to ask every instructor what belt to wear. So this is why I ask. It seems more than not that I end up getting some nasty stares from upper belts that I roll with assuming because I'm wearing a white belt and obviously i roll better than a white( I don't have much issue using the Gi). I try to explain after the roll that I am just not ranked in "BJJ" but they already seem to not care anymore and move on. my instructor says " you are a blue, wear a blue" when I tell him this. I am interested in making friends, not look like a sandbagger.