As we've discussed many times, Scottish subsamples from GB-wide polls are of only very limited use, but I always think that one time it's worth keeping a beady eye on them is immediately after a potentially 'disruptive' event, because they'll often be the first warning sign that public opinion has changed. From that point of view, it's an enormous relief (particularly in the light of yesterday's Panelbase numbers) to find that the first YouGov subsample conducted since the local election outcome was fully digested shows an entirely familiar picture : SNP 46%, Conservatives 26%. If anything, that's a little better for the SNP than most recent subsamples.
The potential error in an individual subsample is so enormous that this doesn't rule out the possibility of a post-locals Tory surge. But the fact that we've got such a typical result does at least make it somewhat less likely that there's been a transformative shift.