I'm a Steel/seryll plate man myself, I don't care much for grinding crazy skills but I do hunt a lot, and with the addition of Runes you can reduce the weight of plate.
As DoctorCheese mentioned above plate is weaker against crush attacks, outside of rifts the only two mobs you need to worry about that do crush attacks are trolls and bears and I think Anacondas.
For me, compared to leather which is weaker vs slash/pierce attacks, there are a lot more mobs that do this kind of damage.
All I can further add on this, in my 85QL plate with a good 2H weapon with LT I can pretty easily solo two trolls, so the crush damage negative buff is not that crazy. I've also never really had a problem at rifts other than taking frost damage but that has nothing to do with armor
As you can see in my avatar to the left, I did own drake armor at one point, this was on SFI a few years ago, the armor I had was 90QL and after one hunting trip I sold it. Simply because it didn't feel as safe as my plate armor at that time. I remember struggling to tank a hell scorpius and a scorpion. Selling the drake was one of the easier decisions I had to make in wurm. My plate armor was a lot more tanky, and once you get used to inventory grouping and quickly removing and equipping armor via drag & drop the weight doesn't really make that much difference. When on deed there's no need to wear the armor so your speed is not affected, and most often when out hunting where you need armor you are either on a vehicle or a mount, so again, the movement speed doesn't matter that much.