My impression of Dixon is that of a good looking, blonde from the southern USA who says "Thank you ma'am," or "Yes, sir." To me, it's the masculine form of Dixie.
I...love this name. IT'S SO STRONG YET SO DELICATE! It's AMAZING. If you want to name your son this then go ahead. Just PLEASE don't turn it trendy or even WORSE...A GIRL'S NAME!