In reply to LeeWood:
> What I would not accept as reasonable is that you've quit leading - which on bolts is prob as safe as top-rope.
Um - no. Fairly safe, all things considered. As safe as top-roping? Hardly.
Things that can go wrong leading that are unlikely whilst top-roping:
- decking out by falling before clipping first QD
- decking out by falling close to second QD without having clipped it
- on some routes decking out by falling close to third QD without having clipped it
- falling and getting inverted and hitting head
- falling and hitting ledge or other protruding rock feature
- falling and failing to absorb impact through legs properly leading to leg, feet, and other injuries
- falling decking out due to QD falure
- falling and decking out due to rope unclipping from QD
- falling and decking out due to QDs improperly assembled
- falling and decking out due to demands on belayer that don't exist top-roping
- falling and decking out due to harness, rope, or other equipment failure because of higher forces involved
I'm sure that there are others I've missed. They all occur infrequently, but do occur. I've had 4 happen to me over the last few years.
In fact, thinking about it, I've had proportionally more close calls from sport leading than trad - mostly because I push myself a lot harder on sport. Trad I mostly bimble around well within my comfort zone.