...I AM tempted to add city and state on this though, and get a small stamp made just for giggles. I might even add KnifeHead Blades to it
That's a cool logo, but I'm not sure if it fits your work. My eye just grabs that negative space between the K and H, and it looks like an axe or tomahawk head to me. Kind of like how the Fed-Ex logo looks like an arrow between the "e" and "x".... without any margin between the diamond and the initials, it's essentially a single character and the letters in it are not distinct. The human eye likes to pull towards the center of a static image and ignore much of the rest; yes, we recognize shapes like a diamond or oval, but that's secondary to whatever is inside of it. Shapes and borders can often obscure, rather than showcase, the visual info inside them.
Maybe I've been slingin' ink and staring at (thousands of) logos for too long, but when I see a logo that "simple" (NOT a bad thing in itself) I tend to see shapes, not letters. If the overall shape of the logo doesn't clearly show what the product or maker is about, it's pretty much a waste. Worse than a waste, if it doesn't represent what you actually make. 9.9 times out of ten, a simple brand/maker name is better than any logo or icon, regardless of the product.
When I get good enough to bother having a stamp made, it will include my last name, "Handmade in USA" or similar, and not much else. As it happens, my initials and signature, the way I sign them, are a striking and immediately recognizable mark to anyone who knows me... but I doubt they would mean squat to the average viewer/potential customer.
I know, I'm a bit of a curmudgeon/pain-in-the-butt on this topic, but hey, it's my trade, and I like to think I have a pretty good feel for what stands out. I've printed literally millions of labels, business cards, flyers etc. and I can tell you, simple is always better. When in doubt, avoid potentially confusing or unclear logos and use your name. Especially for custom work.