For the best protection, you can't beat an oiled foam filter such as Twinair.
You could lengthen the time between cleaning / changing by fitting a filter skin. This would catch a lot of dust before it clogs the filter and are pretty easy to whip off and shake out or rinse.
If you had a spare filter (I keep mine in an plastic tupperware-type container) and a few skins, you'd do loads of miles before you had to sit down with a bucket of paraffin and do the "washing up".
I'd rather put up with a bit of faffing around than risk a buggered engine.