Yes, that's been my thinking all along. basically, we keep Leon in the game, until the starter leaves (maybe Leon gets 2 PAs) or if a key batting moment arrives earlier in the game. We could PH Holt, Devers or Nunez and then bring in Vaz for 1-2 PAs. Swihart could just be a late inning catching option.
Swihart can also PR or play the OF or 1B, if needed.
The argument here on this site doesn't seem to be about having Swihart on the playoff roster. It's about Vaz vs a 12th pitcher or someone like Phillips or Lin. I keep asking, why do we need all these guys to play 2B/3B? They don't need to be PH for, as much as our catchers do, and most are not significantly better on offense or defense than the others, except Kinsler at 2B. I don't see us PH'ing for Kinsler or removing him for better defense (LOL), so we basically would be adding Lin or Phillips as a 4th string 3Bman.
3B: Devers/Nunez, Holt and _____. Are we going to PH 4 times at 3B? I could see wanting to bring Lin or Phillips in for defense, if devers happens to be on the field late in a game, but it should never come to having to us 3, let alone 4 3Bmen in a playoff game.