I called the dealer again this morning and got a different sales rep.
He seemed more helpful (and didn't hang up when someone came in the store.)
Unfortunately, he found that the second Nopal also had unacceptable blade play and the F&F wasn't up to snuff, he said.
So I thanked him for his honesty and his time and I am officially dropping out of the great Nopal Search.
On the plus side, yesterday's mail brought a lovely Trance from another dealer, Moore Cutlery. (Thanks, Gary.)
It's the model 0595, the drop point, satin finish version that, unfortunately, has been discontinued.
In my view, Boker discontinued the wrong model. I like the looks of the drop point better than the satin and black versions with the tanto-like tip. But YMMV.
I like the Trance's ergos. It's a nice-looking piece and there are a couple of decent vids on YT. Check them out.
Mine has no blade play and F&F is pretty good.