I guess that I should temper my response with the fact that I am 6'1 with a 185lb frame and I put out a bunch of power (wattage) and tend to ride aggressively (hard fast climbs, sprints). I would say the wheelset is probably OK for light riders.
All of my failures have happened on flat ground, moving fairly slowly with a light load on the crank- not while aggressively attacking or sprinting. I should also say that I only break rear spokes, the front has been fine. Two spokes broke at the nipple threads, the other broke at the opposite end. Roads around here are rough, but not too crazy, and I am not rough (terrain-wise) on the wheels- steering clear of potholes, ditches, offroad excursions, etc.