I like to put cards into binders, so right there a slabbed or top loader won't do me any good, and also handling of cards and putting them in pages can damage them as well. Personally, I find there is some charm in worn, damaged or otherwise altered cards, and for the most part, I would prefer to have a card of that type in my binders.
I even had recently bought a lot of late 50s/early 60s cards where the original owner had cut up other cards to "update" his older cards, or had written on them. I need cards for a lot of players from back then, and if I can get them at a low price because they are damaged, then that is good for me.
Here is the only pic I took of the cards from this lot, and you can see other low grade cards in the picture also (like the Orlando Pena) or other of the modified cut-up cards like the Don Larsen.