In reply to Concretesnail:
In theory you could use them as climbing harnesses but you would look a bit stupid if you turned up at the crag with one! spend the extra £50 and get a proper climbing harness.
As an aside, as a work harness, the avao is a bit over designed. The navaho does the job just fine. No silly ASAP keeper on the top bod, no silly down pointing gear loops that bunch everything at the front and make it hard to get stuff unclipped. No trapping your balls as the avao seems too.
Can you tell iam not a fan!