I'm sure somebody will correct me if I am wrong, but I believe the 'official' watch spot for Zips athletics last year was Johnny J's in the Valley (weathervane lane). Never been to it to watch the Zips and have no desire to, as its about a 15 minute drive from campus. It would really be nice if a bar along exchange or even downtown was the location.
Personally, I would recommend Pint's on Exchange St. The owner, Dom, is a really cool dude and a huge Zips supporter. Seeing that its on ESPN3 (no clue if its supposed to be shown on STO or Fox sports whatever the hell its called now), I think it would be wise to ask him about it a few days before so that if he wasnt planning on showing it, he can get the set up. Its a safe assumption that he would be willing to show the game.