Bishop's #1 until Vasi takes it from him. No reason to think otherwise. I see no way management simply moves Bishop to "make way" for Vasi until Vasi forces the issue with his play. And that could be so far down the line that it's barely worth speculating about.
Getting back on topic, even if Bishop doesn't return to his October/November form, he's still a Vezina caliber goalie. What we saw in the first half of the year was something entirely different and downright magical. It's good to know Bish has that up his sleeve. If he returns to that form full time, great (WOW!), but we should realize that what we were seeing was on par with prime Dominic Hasek. We can't expect it. But we'll obviously be pretty pleased whenever we see a run like that.