Sorry for dragging this thread out again, after three-and-a-half years............
Despite having only been on the car for three winters, the wet-painted silver finish on the Style 305s (see page 5) hasn't held-up particularly well. Certainly not as well as the satin gunmetal on the Borbet 5-spokes.

They are booked-in next week for yet another refurb., in satin gunmetal powdercoat.
So, yes, from these experiences I'm now 100% converted to powdercoat
just as long as it isn't high-gloss finish.