Hey Winder
Welcome to the forum. I dont know much about pickup winding. I have never done it myself. I did read up on it at one stage when I had plans to try it.. but never did.
Anywho. I recall reading that both scenarios that you describe are an option. When both coils are wound clockwise i think it introduces hum or sometging like that. The second iteration of starting clockwise, and then doing the second coil in anticlockwise i think elimimates hum.
That is my limited understanding of it and i might be totally wrong. Hope someone else can chime in.
Have you tried asking someone on a pickup forum? I would reach out to someone at Bareknuckle pickups forum. Their guys used to be active on the forum at some point.