I just did, actually! There were a few interesting differences, though:

1. Tropius was still in-game, but to fit the fact that it could potentially learn Cherry Bomb, it had not bananas around its neck, but cherry clusters! It was an interesting sprite, to be sure.

2. Atlaxa's whole line had received renames; Atlaxa was "Skelekid", Thoraxa was "Skelekeen" and Illumbra was "Skelekrown". I dunno what the total pun in Thoraxa's name is...maybe "skeleton" and "teen"?

3. There was a guaranteed Shiny Pokemon encounter with a Shiny Kraklaw if you beat the game and had caught the original Kraklaw already, along with other conditions that I don't remember.

4. My brain messes details up a bunch, so it was actually "normal" for Pikachu to not only be in the Dex, but have the original Pokemon Yellow sprite as well. Pikachu is NOT in our Dex, right?

So, anyone else have Pokemon Topaz-related dreams?