I am happy to see another ASM 97 with a Stan Lee sig on it Mine was signed 4 years ago and it looks similar to these. Maybe a little chunky. I also like the placement on these.
And I think other posters have answered your questions. As for would I grade such comics, no. Unless the goal is to sell. I honestly think people would pay as much raw for these as they would grade by another company. Maybe you come out with a bit more but I doubt it. The person who wants these wants cool books signed by Stan. They will expect a discount if buying a book slabbed by someone not considered to be the top of the game. But if you just want to protect em, by all means, slab away