Zimmer total hips 2006 and 2011. Raced Nastar and USASA from 2005 to 2015. Ski and ride about 50 days a season. No problem with hips. Even with a few hard falls on the hips. Total knee in 2016 gives me more issues due to limited range of motion. Hip replacements in September, on the snow in December. Other than going thru airport security, don't really notice the hips.
Asked my Dr. what her thought would be easier on the knees. He said he didn't know because he didn't ski. He said try both and see. We talked about getting him on a carving board.