Well let me try to answerâ€¦
1) Yes and no, if you use Swap Magic and your TV supports NTSC then no, it converts it to NTSC (if you choose that at the menu) whatever cable you use, but Scart/RGB cable is used to transfer the signal to some TVâ€™s, and, if your TV doesnâ€™t support NTSC (everything will be black and white) there are some converters around that can fix that, so find what your TV does before you look into it, if itâ€™s new (late 90â€™s the oldest) and from a big manufacturer (Sony, Philips, etc,) it should be fine with no cables no nothing.
2) Yes it saves fine in all Memory Cards.
3) Thatâ€™s correct, you need an NTSC save.
4) That I donâ€™t know I didnâ€™t bother to download them and check yet, but those names are as â€œofficialâ€ as my own when it comes to the Tenkai name so in general you are better with your ownâ€¦
Now just let me say that by using Swap Magic 3 v.3.6. DVD-ROM Suikoden III works easily and quickly, no need to use a second disc just open the drive (donâ€™t open the PS2 while the disc is inside it doesnâ€™t read it some times) and close it with the 3.6 Swap Magic DVD-ROM inside, then (once it loads) choose the signal (preferably NTSC) and use either the slide tool or flip-top to enter the Sukoden III disc without your PS2 knowing about it, and thatâ€™s it, it should load and play, if it doesnâ€™t then try ejecting replacing the game disc with the same DVD-ROM that you will use for a TOS whatever update, then enter the game disc back using the Slide Tool or Flip-Top and it should work, if it still doesnâ€™t then try the above again and it should, if not then it may be your PS2 version or a problematic disc etc, etc.
The point of the above rant is that with the new version you donâ€™t need to use a second disc and the process other than the slide tool becomes like using Freeloader on the GameCube.
”I am ye who walks his own path and thus I walk alone”