Either of the above, or a blow-brush combination. Anything that will move the pollen with minimum if any contact with the lens. Also, consider getting a UV filter to keep the pollen on a surface you can remove for cleaning, or replace easily and inexpensively.
Just looked on eBay (don't have one of those), looks like it'll take some diameter of screw-in filter. I'm guessing it's in the range of 40.5, but I'd want to confirm that. If you have the same filter on both taking and viewing lens, your slip-on lens cap ought to fit over them, but the case might or might not close with the extra thickness under the cap.