No, I smoke, but I have racked up big lines of snuff and snorted them in a pub before.
It was after going to a all night party, and just after the smoking ban. I realised that the ban was only on smoking and not all tobacco products, plus I 'inherited' some snuff from the party, so I thought why not?
I even did it as conspicuously and as drug like as possible (racking up the snuff into neat lines with a credit card and snorting it a rolled up paper tube) just to see whether it would cause a reaction (subconsciously I was protesting against the smoking ban), but it was only about 10AM on a Sunday so not many people noticed and the staff didn't seem to care.