Changed my mind...I WILL comment.
First, no matter what method is used, there should be a tip protector on the bottom tip. I like the rubber ones as they are real tight. I do however take them off if Ive been out in real wet weather, just to ensure that moisture doesnt get in and get trapped.
With a rubber tip protector, I am confident that I only need to be concerned with getting the string in the nock Im looking at.
I step-through on my heavy 68" and 70" longbows. Id push-pull but my arms arent that long and its hard on the back. On a glass laminated bow, it's a wives tale that you can cause limb twist. If that were the case, they would take a set as well... and they dont.
Push-pull is my method of choice.