Actually, it IS lacking technique. The cover drive is an extension to the forward defence. As an attacking shot, it should be the most natural shot in a player's arsenal. If you are seeing the ball coming towards you in line with the off stump on a drivable length, the very last thing that should enter the mind is a bloody reverse sweep .... or any shot other than a forward defensive push or cover drive for that matter.
Yes, I''m getting that banged into my head thanks.