ok that's 5 for cowboy, 0 for step-through.
I can see it making sense to pick one method and stick with it. Cowboy does seem more foolproof. And at my level foolproof is good! Step-through did seem more graceful and I could see if done well, gives you a better running start. But hey graceful doesn't win races.
I could work a lot more on getting faster, managing corners, etc and make bigger gains than spending a lot of time tweaking the dismount. But hey I may as well pick a method and work on it during my daily riding.