romanised characters are not roman characters though. Omitting the tones the words become unintelligible, as far as I can tell.

What grandparente says regarding using hangul to express non-korean makes no sense to me.

Sure, I can mostly get korean pronounce right using hungarian spelling, but it fails miserably the other way around.

If a language is homophonic to hangul than of course it can be used for that, but the same is true of latin or most anything else.