| Nyerkh |
They're never going to be great with heavy armor specifically (at least not without archetyping right now), but sure.
Most Barbarians will have to rely on armor, as only Animal Instinct can do without.
Light or Medium is a matter of preference, and Heavy is not a class proficiency, so subpar as option.
At least until we get more heavy armored options, be they archetypes or feats, should that ever happen. PF2 could do an Armored Hulk adaptation with just a few feats, at best, though I don't know how good an idea that would be.