I would never do it, because I consider it "damaging" the card. However, that quality should be in the product.
The consumer is paying a pretty good price point as it is - they deserve a better end product. I don't care if it's Topps or the Artist fault - I will put the blame in both areas.
Currently looking for the following comic Books:
United Comics: 21,22,23,24,26
Tip Top: 173 & 184
Peanuts 1 (1953)
Peanuts: 1-4 (1963-64)