^I just posted my design sketch as part of my latest site update. Here's a direct link:
Apologies for the crude artwork, but it's just about getting the idea across. I was hoping the cover artist might do something based on this sketch, but no such luck.
Oh I like that, very nice in-between design, which, pleasingly, feels most strongly like the Kelvin uniform; the way the piping goes across, and the slightly muted colours. I like where you're going with the explanation for the different insignias too.