Pretty much tracks with my own personal experience. Vandy fans are largely harmless and fine to be around, but they have an unearned entitlement which is odd but I think it comes from the academic aspect. They remind me a bit of a much more sedate CU fan, who are insufferable when their team is good. Trojan Fans are also in this pool to a lesser degree.
The "real" UT isn't limited to just Vols, but they do own it. SEC t-Shirt fans that don't have an overwhelming allegiance think that way in Tennessee.
Auburn fans care about one thing, do you hate Bama? "Yes, then we're cool." They don't like Georgia either and Tennessee is not well received, but those are all very secondary. That's a proximity and good historical performance issue I believe.
I mentioned it in the Tailgate thread but Kentucky fans are largely cool and pretty whatever when it comes to Texas outside of Basketball where they hate Louisville (in all things) and generally despise everyone else.
Mississippi State is weird. They just seem to dislike everyone and hate Old Miss.
I have only know a couple of SC folks, they are very cool and don't seem to have a particular feeling either way about Texas.
Broadly speaking, Georgia fans are the worst.