This is a big problem for Labour because they rely on the votes from their Scottish MPs. The Tories don't have that problem of course.
However, it's the inevitable follow on from left leaning Scotland not wanting English Tories to have any say in purely Scottish affairs.
It's now a question of fair enough, you've got that, as long as right leaning England can now prevent Scottish lefty MPs having a vote on purely English affairs. It would seem fair, but as I said, not great news for English Labour.