Hi Jason, no, i meant if the lads had wired in and out of light switch, all that would be at the light fitting would be Sw/N/E, therefore you couldn,t get a supply L/N/E for say an outside PIR for eg, via a spur of course mate.
Other alternative would be to spur off a S/O and spur it, but they are not always found on an outside wall.
I do understand there must be a respectable cost saving on cable, would like to know that? but i am a loop in man myself, call me old fashioned but eh! suppose i am.
With fancy fittings installed in almost all homes nowadays the loop in at the switches makes better sense
The cable to the light I run in three core for any that may require future additions