You say it is relevant in blitz games...but of course that would be 1sec/min and isn't the problem about the same? It is the same inaccuracy we're dealing with after all - to be perfectly honest, I'm more bothered by some chess players' arrogance and bad attitudes during games of chess, some can be very badly behaved! that always spoils the game for me, though fortunately, most players are well mannered, this is after all a gentleman's game.