I don't think liquid cheese wax is the right expression for it, it's a plastic coating and has nothing to do with wax. But I think it's a very good product. Some suppliers offer it in different colors like transparent, yellow, red and black and some of them are mixed with some mold-protecting stuff. Personally I use for my Gouda's 2 layers of yellow, stick a label on the second layer while it is still sticky and finish it with a transparent layer. Cheeses like Cabra a Vino I coat with transparent only. And, as said, it is easy to peel of at room temperature and easy to clean.
Almost all Gouda and Leiden, from big dairies and artisan cheesemakers in Holland are coated with this....