What would happen if the VS Seeker is hacked into HGSS?

Question

surely it still has code in the game, right? so, what would happen I somehow got my hands on it? would it work?

Comments

My hypothesis is that it wouldn't do anything since the double exclamation mark for activating it doesn't exist in HGSS as far as I can tell. I'll have to test it with a save editor to make sure though.
Edit: I found a gamefaqs topic where someone asks the same thing and tests it using PokeSav, but it doesn't work as Oak tells you to stop using it.
https://gamefaqs.gamespot.com/boards/960099-pokemon-heartgold-version/54170029