Brad, I would like to help you in your search for the right Sunday best knife. When worn for fashion over function, the sheath needs to compliment the knife. May I suggest a Nordic style knife with a curly birch handle in an ornate dangler sheath. Go with carbon steel and lightly oil it Saturday night when you shine your shoes. I would get his and hers knives so you match the mrs.
Evidently Norwegians used to wear knives to church. I have read about a tradition that when a young women was ready to marry she would remove her knife from it's sheath. Then her father would parade her around the church announcing "My daughter wants to marry,,,,,my daughter wants to marry". A interested prospective young man would take his knife out of his sheath and drop it in her sheath to signal his proposal. No I'm not kidding.