I’m prepping Eder to get Vatnir at lvl5. While I’m unsure if I would use Eder afterwards, I know I’d pick up Lover’s Embrace for the task and perhaps Vatnir will use it afterwards. I’ve never used a melee Rogue before, so I’m wondering what kind of weapons would be good with them? Daggers and Stalker’s Patience, what else?

Sabers, battleaxes, rapiers.

Daggers are good too for stacking all the dot:s in a short time. If you have Community polishing mod, then I would play Vatnir with axes and his own robe. Bonus accuracy plus the lash makes him pretty good damage dealer.