Was looking to get a new climber, going with the Summit Viper or Lone Wolf, but took notice in these tree saddles. I searched around and didn't find much on them but was curious if anyone owned one or had any experience using one? I guess some people are in love with them. I don't really know how safe they look either. Any input would be appreciated.

Here's the link to the website if you want to see what they are:
http://www.trophylineusa.com/