I guess so long as they don't chip around pops and holes like WoZ did on many playfields [not all] I'm good with it.
I've setup a TON of WoZ and never really had an issue with the thichness of the clear or the "flatness" of it.
sure, a PFR or HSA hand cleared and sanded playfield will ALWAYS look better, but it's not feasible when you're dealing with 1000 playfields.