I think some people are easily both. We've all met workmen or neighbors or classmates who lack manners or refinement or grace but are naturally charming, nonetheless. The clumsy oaf who is friendly and self-effacing; the country bumpkin with the irresistible smile; etc. They're out there.

"I don't know which is worse: ignorance or apathy. And, frankly, I don't care." - Anonymous