NTSC on PAL / Messiah chip

I just ordered me a PS 2 with Neo 2.2 + DVD Region X.

I was wondering whether I would be able to play NTSC games from the U.S. and Japan on that machine? The seller I ordered from told me that I would have to make backups of the NTSC games + patch them to get them to work on my console, is that true?

I can't see the reason why they made a chip which allows one to make backups of his PAL games and play them while imported games like NTSC games are not supported.

My seller also told me bout the messiah chip comin' in some weeks, which makes it possible to boot PAL & NTSC (backups as well), makes DVDs codefree + macro fix for copying to VHS and all this without any changing the discs. Has neone of you heard bout that chip and can tell me if it will have all deez advantages without any disadvantages?