After looking at positional depth, one is okay, and one is not, so let's fill in a backup spot from the position of crappy depth.
With Pierzynski going, and almost every team needing two catchers, the depth of decent catchers there has gone pretty quickly, which leaves a mess of unproven younger guys, corpses, and the ones in-between who either cratered recently from a promising start or have settled into a role. For me, since it's the backup, it's more about filling holes in the offense.
Russell Martin is a quality starting catcher for me, but he's kind of terrible against right handed pitching, and at his age, I'd like to have someone to spell him about a third of the time, preferably in a way that shores up his offensive weaknesses. So I put a priority on getting a catcher who, over his career, has done better v. RHP. My offense continues to put a priority on patience as well, so one catcher stands out for me.
At 29, he's hopefully young enough to last as my backup catcher throughout, and is capable enough to start in the short-term if Martin gets hurt. He's shown good patience and good pop over his (admittedly) limited career, and while his flaws are obvious (low contact and high K-rate can be an ugly combination, his defense is...uh..spotty), he gives me enough value in a limited role to justify it.
Honestly, there's two players I like more at the spot, but one lost me due to age (if the team was a strict GFIN team, I'd have picked him three rounds ago) and another due to health and recent production concerns (honestly though, I thought someone would take a shot on him). This guy seems like the safest option, particularly since he's not a primary catcher. So I'm welcoming George Kottaras - Bench to the fold. Another Canadian.
I hope to use him primarily against RHP, taking about 30% of the catcher at-bats, although I expect I can't be that strict on the expectations there. I'll post a picture later on, but I PMed BigMike