The issue of training during night flights or not is just smoke and mirrors. Cape Town is a training flight on the 777, Durban is a training flight on the 330. That excuse only gets used on crappy flights, if it suits them then training is ok on night sectors to good destinations!!
Luckily the 345 Cape Town is an augmented flight, no training then!!!
Off subject, I see that some trainers may have to resign from training if they want to transfer to the 380. All those trainers on the Expression of interest list will get bypassed by junior guys unless they are replaced pretty soon!! Why go into training now only to get stuck on the 330/340 until the fleet gets replaced??