Having had a few Wapis rescaled for me over the past year or so, I would say keep the stainless on.

Think about it - how many non-Wapi razors do you see around here with stainless steel scales?

Stainless steel is a near-indestructible, easy to maintain material for razor scales that you just don't see every day. The fact that Wapis already COME with them pre-installed from the factory is uber-cool and makes them stand out from the crowd.

They're perfect just the way they are.

If you're going to rescale something, make it the cheap warped plastic scales off your next 'bay score.

Just my two cents.