I am a daily shaver - both head and face. I can do one or two passes on my head with no problem and get an excellent shave. Part of the reason is that the grain on my head goes in one direction.
My face - particularly my neck - is another matter. The grain on my next goes in numerous directions and seems to change every inch or so. I have a similar problem on parts of my cheeks - but not as bad as my neck. For me, WTG and ATG are meaningless because with every direction I go it will be a mixture. What I have done is to find which direction my beard grows for the most part and that becomes my "WTG pass" even though it could be ATG or XTG in spots. So, my first pass is North to South. I do a four-pass shave and rarely get a cut and neck. However, I have found I need to use a less aggressive razor and use a light touch.
If you are fortunate and have grain that does not change direction that often you can safely use fewer passes. I wish I could be in that camp.
My face - particularly my neck - is another matter. The grain on my next goes in numerous directions and seems to change every inch or so. I have a similar problem on parts of my cheeks - but not as bad as my neck. For me, WTG and ATG are meaningless because with every direction I go it will be a mixture. What I have done is to find which direction my beard grows for the most part and that becomes my "WTG pass" even though it could be ATG or XTG in spots. So, my first pass is North to South. I do a four-pass shave and rarely get a cut and neck. However, I have found I need to use a less aggressive razor and use a light touch.
If you are fortunate and have grain that does not change direction that often you can safely use fewer passes. I wish I could be in that camp.