[quote name='archibishopthedoge']No. It wont have any compatibility issues. The game is compatible across borders, what determines DLC is you. If you have access to the US store, all material will be compatible with your version. Its a region free game![/QUOTE]
I'm pretty sure dlc is region-specific, actually. At the very least, I know that people couldn't unlock the hidden info in the MGS Database if they had a different region save from the Database download. Maybe that's a specific case.
But I'd be weary, at least about dlc.