As far as I know, The Griz will still have two exhibitions. Nov. 2 and Nov. 13. Haven't heard anything on a schedule change, yet. Not sure why they didn't advertise on GrizVision the exhibition game in Missoula on Nov. 2nd. Season tickets from what I was told will be available to pick up Nov. 7th and won't be mailed, so I believe it will be free to the public.
Scrimmage in Hamilton is just a way to introduce the team to other areas in the area other than Missoula. Hopefully, they will draw enough interest that more fans will show up. There will be the silver-maroon scrimmage later on in Missoula, I am sure.