6Actually, after trying out six TVs bought in the UK within the past 5 years, only one will handle pure NTSC (i.e. NTSC 3.58). The others will only give a colour picture with NTSC 4.43 or PAL-60. Although, this is not normally an issue because RGB SCART is the most commonly used connection (the colour information is kept seperate and never sees a PAL or NTSC encoder).
Sorry Moth3r, just a quick addendem: I've just checked and all the new TVs I've been in contact with in the last EIGHT years DID have NTSC 3.58 playback (although this is only about 4

Considering my old Sony KV32FX60 (which was made in Sept 1999!) handles it perfectly, I would have thought all semi-decent make TVs would by now!
Anyways, this is a moot point, as you've already pointed out that YUV and RGB separate the colour signals.