I'm on my second TA Duo. I'm very happy with the saddle for my needs. In 2004 I got to try on (and hang from) over a dozen saddles at the TCIA Expo in Baltimore and the TA Duo was by far the most comfortable for me. Prior to the Duo I had climbed in $79 buttstrap saddles for 15 years and a Buckingham saddle for a couple years. This was my first 'advanced' saddle.
They aren't as durable as the Weavers or Buckinghams and it's not quite as supportive if you're carrying a big saw on removals, but they are great for trimming flexibility or just hanging out for several hours. My first one wore out in a little over a year, but I suspect my current saddle will last me many more years due to the fact that I'm a bucket baby now. My only minor complaint with it is the lack of legstrap buckles. I have to step into the saddle like a pair of pants.