I also subscribe to the "do what's best for you" philosophy after having the "THIS is how you do it" perspective thrust uopn me. As a massage therapist, I can give you my perspective, based on hands-on experience, that we are NOT all the same, anatomically.
When I teach lessons, I teach the students the basic mechanics (fulcrum, balance point, wrists/fingers, etc...), but I let them develop the nuances of their particular grip.