Yes, you may well be right. I've seen both of those methods used in individual 2-way switching circuits (i.e. either L or N travelling with the strappers) - but, as you imply, to use different methods for two 'related' lights/switches would seem to suggest that it was done for a reason.Pretty much. But, and excuse the pun, but I'd bank on there being loads off to the left, I'm sure of it. Otherwise, why go to the trouble of designing it that way?
That's clearly true.But even if there were loads to the left, there wouldn't be eddy probs (excuse another pun) as long as the two 3 cores run through the same knockouts.
Kind Regards, John