Pairing briefs are hit or miss. Some Captain's do them them, some don't. Not a huge deal on that one, but skipping it lacks professionalism. Departure and takeoff briefs should NEVER be skipped....ever. And I don't recall anyone actually skipping these. Approach briefs can be abbreviated per FCOM guidance. If you're both based at that airport, and you're planning an arrival and visual you do everyday, an abbreviated approach brief would be acceptable. While there is some procedural drift, I find most pilots to be pretty standardized here.