FWIW, The U.S. Ghost saddle dealer states that the rider weight limit for their saddles is about 165 lbs. From their website: http://www.badlandsequine.com/page/2555/Choosing%20a%20Ghost
“Note that most treeless saddles, Ghost included, recommend maximum rider weight of around 165 pounds and less for faster riding endurance riders. We are currently testing different panel shapes and materials to extend this range or add to your comfort zone especially if you ride for particularly long times.”
From the Australian Dealer http://www.horse-connection.com.au/ghost-saddles - “Please note that the weight limit for the Ghost saddles is 80kg for pleasure riders, we may make an exception if you are a little heavier provided you are balanced and do not spend long hours in the saddle. The saddles are not suitable for stirrup heavy riding, i.e. ‘competitive endurance’, regular jumping or any other sport that involves lots of two pointing/standing in the stirrups. If you spend long hours in your saddle on the trail or you are a bit heavier, we now have thicker panels available that can be ordered for older and new Gost saddles, waiting times apply.”