I would think they would only block the game on ESPN3 if it was being broadcast on BHNS ...
This.
The only games I have ever seen blacked out were the ones that were picked up by BHSN, and if you had anything other than Brighthouse in or around the area you couldn't watch the game (even away games).
I got verizon Fios after having Time Warner/Brighthouse for years (fortunately for me, some of my family and friends still have Brighthouse). I had to go over to their homes to watch multiple games last year (all away, I have season tickets) including the Nevada game (CBS sports network).
If Brighthouse picks up the game, and something else is shown on BHSN in your area, ie Orlando, you can still watch the game on espn3, because Brighthouse cable gives you access to that (all other carriers would be blacked out).
Essentially, if you have Brighthouse, and USF is broadcast, you should never miss a game. No other carrier has a local channel (ie. bay news 9, BHSN) looking to bid for games.
I was, and still am, not up to date on the new contract signed by USF and Verizon Fios (after BH contract expired). I thought Verizon would bid for exclusive rights (for espn3), but still hasn't been seen, and I doubt they ever would.