A few years ago, Mammut came up with a "revolutionary" idea. I wonder about the people who invested in the Mammut harness+pants combination: still have them?, use them?, what they think of them.
The big difficulty for me are the tie in points and the lack of belay loop. The tie in points are horizontal instead of vertical and constantly pulled away from each other. Things as simple as hooking up a belay device while tied in become much more of a pain than usual. If they had standard tie in points and a belay loop I'd probably give them another shot.
For top roping they were pretty easy to use, and if I top roped or gym climbed often I would probably dig them up and use them. The pant material and fit were actually really nice.
I met a bunch of people in Potrero Chico using them for highlining. They worked great for that purpose but can't see them being using much for lead climbing.
Same as Chris. I love them for the comfort factor but def would not want to belay while tied in, guide mode only with these... as others mentioned, hands down the most comfortable gym harness in the world, bar none- that said, most gyms have no clue about them and instinctively tell ya that you have to wear a “normal” harness ... (insert eye-roll emoji here)