What do you wear as a casual/informal/daywear kilt belt and why? I'd like to hear some opinions and pictures would be most welcome!

The reason I'm asking is because I'm looking into getting a belt to wear with my traditional kilts (both tartan and solid) in casual and/or informal situations. I'd like the belt to be able to work with boots, scrunched down hose, and a tee shirt but also be dressed up with a tweed jacket, shirt, tie, and brogues. I already have a shiny waistplate-type for more formal situations.

I'd prefer black leather and have narrowed it down to a couple options, though I'm open to other suggestions. While DIY is possible, I'm trying to keep this simple.

Either a 2", double prong belt like this:


Or an antique finish buckle that could go on my existing black kilt belt: