Not to be defending Scott here... but it is POSSIBLE that the two albino strains are different.
I note that looking at the photos of the two albino lines Scott is working with, that one albino gene seems to mask the wild color of the snake more than the other strain.
Scott Felzer's Garter Snakes
Since I have not worked with either, I have no firm opinion.
I do know, however, why the melanistic genes are present in the Schuett strain. Schuett improperly thought that if he bred a melanistic to an albino, he would get snow. That is not how snow is made, and Kyle eventually sold the line to Scott Felzer, who had the anery gene to make the snows.