My normal vocation is in marketing, and so I'm opting to use my graphic design and other skills to make an Ulthwe codex that's all in one! No more carrying around 3-4 books for me! Even better is it can feature my own models!
Now, my Dex is progressing well, but because It's effectively GW's writing for the rules of normal units I'm not showing them here. That said I feel comfortable sharing the pages for conversion units I've made, which have no official corresponding 40k rules.