Oh absolutely, they won't go into coalition. Neither will change uk. But I'd wager they'll keep a Labour - snp minority coalition in power rather than revert to a general election, by abstaining on certain votes, and there will certainly be areas of agreement
But so are the Tories right now.... makes predicting the next general tricky, but every chance of a Labour-SNP-Plaid minority coalition tacitly supported on certain issues by LibDem, Green, ChangeUK....
..which would be interesting....