With all the dangers surrounding the use of daisy chains to clip into an anchor, Metolius decided to create a much safer option- the Personal Anchor System or Metolius PAS. After climbing in Boulder last summer, I decided to buy one as I wanted a personal anchor system that was not only safe but also adjustable and extremely easy to use.
The Metolius PAS is made up of numerous individual 16 mm Monster Sling webbing loops (27% Dyneema, 73% nylon). Each individual loop has ten bar tacks (compared to a daisy chain's two), giving each loop the full 18 kN of strength.
The PAS is designed to be used as a multiple clip in point, meaning you can clip into two points on the anchor with two separate loops for redundancy. You don't need another daisy chain, sling, or quick draw to clip into the second point. Each loop is 4 inches long so you can easily adjust your distance from the anchor simply by clipping through the next loop.
For both rock climbing and ice climbing, I automatically rig my Metolius PAS to my harness from the start. During multi-pitch climbing, I still clip into belay stations using the rope with a clove hitch in case I should fall, but use the PAS when clipping into the top anchor for rigging up the rappel. I also use my PAS to clip into the anchor at the top of a single pitch climb that I have seconded in order to rig up my rappel or to be lowered down after clearing.
The Metolius PAS makes it super easy to extend the rappel through one of the loops in front of you. The PAS also allows you to weight the rappel before fully unclipping from the anchor to make sure everything is set up correctly.
Some people argue that the PAS is a bit of a one trick pony so they would rather carry multi-purpose slings. My view is that since the Metolius PAS weighs only 3.2 oz, it isn't going to weigh me down and the convenience as well as added efficiency are well worth the extra weight. The PAS stows nicely on your harness-simply clip a bunch of loops together and stow them on one of your gear loops.