I have noticed when putting that on the reverse view sometimes the hole is on the grid line, sometimes to either side, i'm sure i did see this on a thread somewhere, but cant find it, is there a relevance to this or not?
No relevance - the reverse view was "filmed" for programming at (not) the exact same time. Same for different shadowing - it all depends when the hole was diagrammed for programming.
And generally, reverse view is slightly more zoomed than regular view (for putts).