I have allowed it too. Sometimes it is a way faster and more effective method than having an external deterrent, imo.
I do tell my dog off if she gets too full on with the cats. It's not such a huge problem at home when the cats have heaps of safe places to get to. All they have to do is jump on a table or bench or over a baby gate. But of course you do want to prevent them not being able to touch the ground without being charged at. The lead will be your friend to teach your pup some manners in that regard if needed.