I was about to comment on that, too, but I then came to think GP might have meant game misconducts (in case of getting actually physically violent) which would usually be a greater loss in case of a primary goalie than in the case of a random skater.

Still there's probably plenty of area where the penalty could be a two-minute minor (served by another player instead of the goalie), and where goalies are still permitted to defend their crease with means that would be considered roughing or something similar if done by skaters.