Being Australian and under 30, Dick Cheney is not someone I ever payed a lot of attention to. I knew he shot that dude and the dude he shot is the one who had to apologise somehow, and that he was one of the evil puppet-master types who stood behind George W. That's it. So while Cheney as a subject matter isn't something I can say I care about, it's also not material that's old hat to me either. I ended up watching it only because that's what my mate wanted to do for his birthday, but I'm glad I did. I did not love Vice, but for the sort of thing I don't normally gravitate towards, I was riveted.
Final rating:★★★ - I liked it. Would personally recommend you give it a go.