As someone mentioned above, Oakland's Vogt is actually a decent hitter -- very good numbers in the minors, 95 OPS+ in his first real MLB action last year. And Norris/Jaso are both clearly better (and more valuable) than Suzuki right now -- both would warrant precautionary rest or removal from a game earlier and more frequently than Suzuki. Another example would be Atlanta, who is ostensibly carrying three catchers even without the need for a regular DH, but Doumit isn't there to be a third string catcher -- he's mostly there to pinch hit and DH or play the field once in awhile. LeCroy was that player at times for the Twins too. I am pretty sure the Twins are mostly alone in their desire to have a dedicated third string catcher at times, regardless of offensive ability (or lack thereof). Corky Miller, Chris Heintz, later period Butera, now Herrmann or Fryer. I will say, they haven't employed a third catcher THAT often, as a percentage of each season. But probably more than most teams, and they have certainly done it repeatedly since 2005 or so, with the same type of player, usually for the same type of concerns.