The only powdered bike I have kept is a '93 Allez Pro in bright yellow powder with a clear coat of powder over that for extra pop. Built up as any other frame and while not ham fisted (have been at this a long time) took no particular precautions. Have not pulled the FD clamp but have the RD for checking for a bent hanger and saw nothing but shine on the finish. This afternoon I will look the frame over carefully and pull the FD clamp then post a photo.