I finished testing most of Link Cable Club, and tl;dr, everything seems to work. I was able to trade, battle, and get into the Generation 1 trading room, which is the Generation 1 Pokemon Center. Haven't tried to trade to Generation 1 yet, but otherwise, testing is complete.

Interesting notes:
>VS trainer text is strange.
>Route 1 music plays while trading and in rooms, gym leader music while battling.
>Held items used in Link VS do not come back after battle.
>Demo IDs are different. I'll add a few screenshots to this thread, but here is a ZIP file of everything I took.

https://mega.nz/#!3TYCETiK!D94vFigSyvPmRKbbntdrwTCnsU4Y8YXTJZn9qe-eN-w

Would love the generation 1 text translated. Has anyone else tried battling/trading?