Unless I missed something, the new weapon skill rules in LN11 will make things for heavy armor dudes a lot harder. Previously, a lot of the weapons that go with this kind of fighting style were based on Str and thus didn't carry a penalty for trained users, but now those all use Spd.
Whereas you'd have no trouble at all fencing with a rapier or swinging around a quarterstaff (which was one of the few weapons which ran with Spd previously).