That PM-9 looks great. DWs are well made, with all forged or machined-from-bar-stock parts. They tend to be conservative in appearance, without the more decorative features like unique patterns on grips, serrations, etc. or extensive brand names/logos on the sides of the slides. There is no reason you couldn't take a DW 1911 and tart it up if you wanted to... but to answer hensc's question, it is good-to-go if all you want is a very good 1911 for your collection.
If you want to build a highly customized 1911, there are a lot of routes to go -- have a gunsmith build one from scratch, order one off the order sheet from one of the high-end companies, buy a decent frame (used or new) and add parts that look good to you or serve a function, etc. But if I did something like that, I think I'd still keep my DW Valor 9mm (2017) just the way it is.
https://imgur.com/DR9rUmc