This was what I found in X2b... I couldn't get it to respond twice in a row...
Now in X3c I think it's working ok. The one button N does enable whichever snap you're using... But the change of visual Status in the PRV's snap still has color showing that Sonar will respond to that value in PRV when N (Global) enables it... I guess think of the PRV snap as a subset of Global which can be applied or not... So the button remaining colored is a bit of a throw off... I can live with that...
If I have the prv snap I seem to get the grid I expect related to the snap setting (Global) and when I enable the PRV snap, it then changes to following the PRV Snap setting instead....
I'll look more and see if it's intermittent... I thought I looked pretty carefully, but I've been wrong before.... ;-)
Keni