It amazes me that some NBA players don't wear high tops.
Comfort, mobility, weight...
sprained ankles...
... then why doesn't everyone wear ankle braces?
Because they are wearing high tops?
Hehe :]
Point is though, ankle braces are even better at protecting your ankles. What I'm trying to say is that different people like different levels of comfort

I've played with, and without, and currently wear shoes that are right in between high and low, without braces (unless I play more than 2 competition games in a week, in which case I'll wear braces on the third+ games.)