My Baruuk Prime is in the foundry right now, so I was looking at fashion I can do with him. Given the lack of a Deluxe skin, I was looking at his Tennogens when I noticed an issue with the toggled Prime Details on his Tennogens. Here's a screenshot from a video of Baruuk Prime:
And here's a screenshot of Baruuk Prime with a Tennogen skin, helmet, and Prime Details toggled on.
As you can see, the Prime Details fail to implement any kind of cosmetic change besides his waistcloth. the new legs/feet/arms/shoulders have not been properly implemented. This is true for all his tennogens:
These are not my own screenshots, but still. I hope this is something DE is going to address/fix, considering tennogen are the only skins Baruuk has available.