In reply to Yanchik:
I've got a load of 4ft dyneema slings trebled up so you get the best of both worlds. No dangly things on your harness, works well as a short runner and the flexibility to pull out a long runner when you need it. Very useful in the big mountains too as it can be used effectively for spikes, threads etc..
Don't know how to describe how you treble the sling up best: I think there was a long thread about this a while ago. Bascially hold one crab in your hand and let the sling and the other crab hang. Pass the bottom crab through the top crab. Stop and look at what you've got when the bottom crag has been passed halfway through the top crab - you've got two loops of sling hanging down. Finish passing the crab through and clip those two loops. In effect each crab is clipped into 3 loops of sling. Unclip any two of these to extend.