Just a thought...
Shouldn't technique be determined by what the situation warrants? I would think that in certain situations, factors can change or alter what may have previously worked.
Just two days ago in Evansville, Indiana I watched Mr. Phillips prime the pad with product using his finger and then apply 3 dime sized drops. It was inside, and panels were cool to the touch. My guess is, that this method is his "baseline" if you will, or standard procedure to put it another way...a starting point that through and by experience typically produces stellar results.
Change that situation up with various factors and I can almost bet you Mr. Phillips would tweek his technique to fit that situation. When other factors are present being flexible, in my opinion, is what separates the pro's from the rest of us...like me. I don't quite have the knowledge to know exactly what to do, or what pad priming method might produce the best results in a given situation. However, as with almost anything in life, being flexible has its advantages.
Some prime the pad with product and then apply drops of "working product" to proceed. Still others wet the pad, spin as much water out as possible, then apply "working product" and proceed with the work.
For myself, I don't want to get caught up in which method is correct because I don't think there's a definitive answer.
Technique, like products, should fit under the category; Find something you like, or that works for you, and use it often. However, don't be afraid to change things up a bit when things aren't going as planned.