About 1/3 of my recent submission using the Wild Card special includes PSA slabs that I want in Sgc holders. They dont charge extra to crossover, so while it might be a cool idea to grab a little market share one of these upcoming months, I think the tier pricing itself is a bit more important than strictly running a crossover special.
(6 bucks to grade any card up to $250 value is a nice price, I think)
I've always included my cards intact in the PSA slab. I know you can request a minimum grade, but my are already rather low so I dont usually worry about that
