On card seems to be making a bit of a comeback. I certainly prefer it since I worry that the stickers may delaminate at some point. I appreciate that UD is doing on-card sigs, not stickers. As for Chavez, well, he is one of the ATGs in boxing but his signature is chicken scratch and I've never felt comfortable adding a card of his to my collection, even with a TPG cert. This issue turned out to be the perfect solution.