I don't think every out of towner is a hawk among chickens either. Mediocre players travel too.
Mediocre players travel, sure. But what I'm getting at is that every good player has a home store, and traveling (especially for Store Championships) is a good way to find those men and women defending, so to speak, their home field.
However we're talking about 'prize snipers' who are presumably traveling with the explicit intention of finding weak competition.
You're talking about people who travel looking for weak groups to stomp, but I'm talking about the fact that it's silly to assume you'll find any.
I'm the absence of any official ranking system competitive success at larger event is really the only way to define these players. Or at least the ones anyone cares about. If you're bad and traveling hoping to win prizes, nobody cares.
Again, this is the problematic assumption I'm talking about. Everything you've said here reinforces the idea that if someone who has been successful at a regional or national level travels to a sanctioned tournament, he or she is going to find an environment full of weak players with little to no tournament experience. And while I'm certain there are a few places like that, there can't be many, and I doubt anyone looking for them is going to be successful.
I traveled to McPherson, KS last weekend (pop 13,155) for a friendly tournament, and recognized several strong players from this year's Tulsa regionals and from GenCon. It was the home store for a couple of them, and a couple more were up from Wichita for the day. I wasn't expecting to find an easy set of games, which is good because I didn't find any.