Since most highland pipers play standing up, the role in their performance played by their feet has been largely restricted to ambulation. The only exception to this has been in Cape Breton where pipers playing for dancing frequently do so sitting down. One advantage of this practice is that it liberates the feet for other roles,and this has become a feature of Cape Breton piping, a feature that has, of late years, been adopted by a number of bellows pipers.
The question arises then, does this technique have anything to do with 18th century Lowland piping? My answer has to be, If you mean did 18th century pipers employ similar footwork then no, it seems to me highly unlikely, and there is no evidence that I know of to the contrary. If your question however is along the lines of ‘does this technique have any relevance to the way we play Lowland music today, then my answer is very firmly, yes.