Its always good to play against someone who "sticks to their guns", consistently playing ( and believing ? ) in the same openings : you can look forward to a testing game.
In GM terms, a clear example must be Sveshnikov with his c3 against the Sicilian, and the same man with the Sicilian "Sveshnikov Variation" against 1.e4 !
I have no idea if my opponent is quite so principled as Sveshnikov in his chess beliefs, but he does seem to stay with the Caro-Kann against 1.e4, so when facing him. it gives me a choice of sticking to main lines ( and probably his better preparation ) or going with something different.
In this game, I chose something different ( after reading about it on the brooklyn64 site ), and played 2.Nc3 and 3.Qf3 against his expected 1...c6 and d5 and ended up here a few moves later...
I had in mind a king-side pawn attack, with the likelihood that Black would attack on the queen-side. Who would be quickest and most effective, is the question usually posed in such situations ?