It's not completely custom, i.e. ochs und junior is using their own design, but the blog post is a lovely showcase of why he loves the watch, and watches in general.
If you value polish, go with your Ressence. If you value a custom watch that matches exactly your specifications, OP's choice is perfectly fine. It's obvious he will get more enjoyment that way of his money spent. Nothing wrong here.
And that comes with a custom watch w/ a design cycle. I guess instead of paying for a store-front, sales people, advertising - this is where the cost would live.