I pretty much expect that Monty isn't likely much better than Pavelec. I don't fear that discovery. I'm hoping perhaps he might surprise me and be a bit of an improvement over Pav's though. I just don't see any benefit to playing Pav's more than Monty. In fact Pavs seems to play better when he's rested so maybe that (as well as a bit of healthy competition for the starts) might be a benny of playing monty more too...
I used "I fear" in the idiomatic sense, I don't literally fear that Montoya will regress with more playing time.
And I pretty much agree with everything you said.