Great, if heavy.
Review by: michaelsanford, 2008-06-05
I have been using this for a few months top-roping and have loved it. Curious about the "guide mode", I rigged it to a bolt hangars and tested it. It in fact did autoblock (on a 10mm rope) very well, and held me hanging in my harness without touching the braking bite at all. Of course, there's no fall factor, but still impressive for a passive device.
It does not auto-block (if, say, you're used to a gri-gri's auto-blocking) in regular belay mode, but the high-friction is great for arresting my friend of 200+ lbs without exceptional effort.
It's a little heavy compared to the last generation of tubular ATCs (but it's not like my dad's old magnesium allow equipment, so I won't complain).