Those are similar to the Memory Lane ones they would put in with orders and even PSA subs for little time. I never really cared for the blue ones with writing, but would possibly get a few plain ones.
I was thinking the same thing. Never have seen them for SGC cards specifically. I am more of a graded card sleeve guy into a binder with 4 pocket pages.
Binders even designed for graded cards? Never heard of that. Sounds like a good idea, so at least you can flip through the pages and see the cards. I keep most of my graded cards in sleeves, then in a box designed to fit graded cards specifically.
I guess companies are pretty inovative these days, and have a design for every collector.