Looking at your sigm Tbo- and realizing that if I pulled the "I was a Hawk fan since I was 3" - would put me back in the Original 6 period.... man, now I'm petrified.
Ok, on to the 58 game thing, that's sort of a red herring, to be honest, as there are not many goalies that end up with that many games in a season - a guy like Belfour- when combined by Keenan's use of him was a freak - in terms of that guy played like 70 games out of 80 in a season --- that isn't the norm, and hasn't been the norm, excepting in extraordinary circumstances -such as Broduer, Roy, and Belfour -obviously some others too- but a lot of teams have to go with the more equal distribution of games among a tandem -just basically out of necessity, as opposed to any other reason.
There isn't anything wrong with using goalies in that way- although even those teams go with the hot goalie when going into the playoffs.
you did nail things, though -- injuries ... guys like Emery don't generally become journeymen players without extenuating circumstances - Emery's is injuries.