The vocals'd be nicer if it was two or three different people and not just a wall-of-Luther, but I can't fault you for that.
Lately I've been trying to herd my jackass friends (can't you tell I love them?) to help with just that--that or single-track more, to avoid the problem. This one, in fact, is just a double-tracked lead and a single-tracked harmony. But I do get your point. And yeah, it is definitely not anything groundbreaking, just a little thing I thought up one day that I thought was kind of pretty in just the way you mentioned, an old-time kind of thing.
Thanks for your comments. I really appreciate it.