I feel like this is something that should be addressed.
A similar scenario is to unequip an offhand or equip a 1-hand to gain access to "Sucker Punch" for an extra Knockdown.
It's way to easy to swap weapons to pick up these 2 abilities, in particular.
In fact, any time a character has lost enough armor, unequipping the shield has no drawback (your max armor will be reduced, but not your current armor) and you then gain access to a great CC skill, and unequipping costs 0 AP.
Perhaps when these abilities are granted they should be on-cooldown. Then swapping weapons in combat would be a trade-off instead of just picking up another skill.
