@mobama: Because none of this is supposed to work with KSM.
A choice of launcher is exclusive, they're designed not to step one each other's toes.
In this specific case, KSM always wins.
Hence the mention that "existing users" (i.e., you) should probably figure their current launcher situation first
.
I'll try to make that more explicit in the first post. (EDIT: Done. Does this clear things up for you?).
EDIT: Oh, hey, missed a new page again
. Basically, @sherman hit the nail on the head
.