Also, on a more general note:

Some canopy materials have bad interactions with polarized lenses.
When I was training in a Diamond DA-20 I made the mistake of wearing
polarized lenses once and was treated to a wonderful changing moire
pattern all over the canopy, as I turned my head - ugh!

So check your canopy as well as your PDA, before you drop a lot of
dough on fancy lenses!

--Noel