Rage and Medium Armor xp

That could explain it then, I've mostly been in areas where my Dual Wield was too high to skill up but medium armor wasn't. I'll pay more attention to the gains in an area where I'm getting weapon xp.

I was gaining some, it was just a negligible amount. That could be partially because Dual Wield puts out smaller numbers per-hit than, say, 2H, but even when getting sizeable crits it only seemed to be bumping up 1-2 xp at most. A lot of hits don't award any at all. Though I guess I should ask for clarification first, is Rage meant to be a viable way to level up Medium Armor skill on its own, or is it meant to be more of a small, supplementary income in addition to letting things smack you around? If it's the former it may need to be increased a bit if this low xp trend holds up, as by skill level 29 it is already painfully, painfully slow to the point of impracticality.

It might also have been caused by my Medium Armor skill being pretty close (within a few levels) of area cap, though. I'll keep an eye on the gains the next time I'm in a more difficult CR and see what they look like.