I’m currently using old glossy dragon shield white sleeves. I can barely see the back of then codex card which allows me to adjust the cards so they are all right side up (I’m picky like that). No issues with the codex binders at all (2 cards in each pocket). Barely any sticking for me, but my home is AC’ed. However, even with the thick dragon shields, the cards feel extremely thin. I may end up double sleeving codex since these are the thinnest cards I own. My print and play games are actually thicker when sleeved.