The whole leader issue is one that I have struggled with over the years. In the midwest, we used to encounter some real problems with the static issue during the winter months, even in studios with humidity control.
When I ran a large facility downtown, we had in-duct humidifiers on all the air handlers, and could get the RH up to 30% in the dead of winter, but then had condensation on all the windows!
My only complaint about paper leader is that, to the best of my knowledge, none of it is acid-free. We have had archival tapes come through our facility where the paper leader has turned brown as a result, which with acetate based tapes is never a good thing. In addition, I have had problems with the splicing tape not adhering well.
So, for the time being, I have been sticking with plastic leader for any tapes that are headed for an archive, but still prefer paper for the static control.
I had approached the engineers at 3M once about making a back-coated style leader tape to help with static control, but it never went anywhere.