People stick with a small set of papers for Pt/Pd because so few of them work well, and it costs a lot of money to experiment.
A good paper needs to have decent stability during wet processing (because if the fibres move around too much you lose your picture), good strength when wet so it doesn't tear easily, as few chemical additives as possible (alkali buffers kill platinum), and a pleasing tone and texture. This is a fairly rare combination.
Having said all that, it's great when people experiment with new papers. I wouldn't waste platinum experimenting, at least until you know that the paper works well with palladium.