I am using a Pax2. The efficiency is really good. In the long run you probably save some money compared to rolls because you need way less weed for the same effect.
Downside is the cleaning. After some uses, the vabe gets dirty and a bit clogged. But I don't clean too often (just every other month) and it is not the hugest hassle.
I personally wouldn't do it. I don't see any benefit from it, other than maybe looks. But I would be worried of some fungus or mold growing underneath. In my last grow, I actually had some fungus. But I could spot it fairly quickly.
That being said, we are all not professional gardeners, but learning from experience. Do what you feel comfortable with. And if you grow a wicked weed, share some!