Cameron,
I call probably more travels than anyone on this site. I have seen myself on tape multiple times and call more travels than my partners or identify the obvious ones in dual coverage areas. So no you would be wrong about what I think about calling travels. I believe I even shared a situation this post season where I was the only one out of the three of my crew in a playoff game that called the same move a travel on a big man and I got crap for it. And I looked at the plays on tape and saw every one again as I did in the game. I just identify the pivot foot when I do and watch what they do with that foot and do not guess what I "think" happened.
And yes it is still a judgment, because we do not have all angles of this play. We have a still where it appears the player has both hands on the ball when it was stated earlier he had complete control before that. So yes these are still judgment calls. Maybe to you it is not because you officiate plays with pictures, but it would still be a judgment with multiple angles as to when a player has the ball in their hands or has ended their dribble.
It is silly to say that it is "obvious" when the people that said so could not tell us for the most part why by rule it was a travel when they first saw the play. Again, we call the game in live action, not by pictures and slowed down action. And we also get one shot to make that determination, not several shots at the bite of the apple to make sure you got it correct.
Peace