Join Date: Mar 2012
Location: Whidbey Island Washington
My mom has a Bob Marshal, she bought it because she fractured her tailbone and couldn't ride in a normal saddle. She loves hers. I've ridden it many a time, and must say, its darn near the most comfortable thing I've ever sat in. We've never had any issue with it slipping while riding unless the cinch was loose (woops!), but it does spin when you mount if you mount from the ground. We usually just look for a log or a hill to use for a 'mounting block'. The only downfall for me is that the horn is REALLY high and I always end up with bruises (though I typically ride english or bareback, so it could be somewhat my fault).
My mom also got their endurance saddle, and we both hated it. The stirrups were set too far back, which would be fine if you were standing up all the time, but we generally don't, and they were painful if you were sitting in the saddle.