In reply to Robert Durran:
> So obviously the sensible thing to do is not to use a "slick device".ick device" (I don't know whether you consider this "standard" or not).
No, it's a rather silly thing to do.
In a factor 2 fall, any common trad belay device (whether sticht plate, tuber, ATC, ATC XP, Bug, Bugette, Reverso etc.) will slip because that is exactly what they are designed to do.
If they didn't slip then the full force of any factor 2 fall (potentially 10kN) would be passed through onto the belay with an appreciable risk of the anchors failing, potentially resulting in both climber and belayer falling to their deaths.
As such, your suggestion of not using a 'slick device' that slips, would just make things more dangerous for both belayer and climber.
Most climbers are ignorant of the fact they would probably burn their hands if their leader fell and ripped every runner but equally it is pretty much guaranteed they will prefer the risk of minor injury to that of potentially tumbling to their death.
If you have a leader who is never going to fall it is obviously a moot point. But once falling and hence large falls become a distinct possibility as opposed to a freak occurrence, the sensible thing is to use belay gloves.
Most climbers hardly ever fall off and most will never consider wearing belay gloves but that does not change the fact that wearing gloves reduces the risk of belayers being injury when holding large falls.