Does the increase In swing speed for master of arms stack with your haste pot and quickness? or is it just an alternative to not have to use haste pot? doubt it but I have to ask
It should stack with haste pots/spells and quickness, but there should be a cap on swing speed also, so if you are capped on swing speed then MoA isn't helping any I don't believe.
I never tested the cap speed, but I remember someone talking about testing MoA and haste and it worked.