"The characters base movement speed is increased by 30' when wearing chainmail or lighter armor"
IC wise, our formerly 0th level Torchbearer named Tauric has this proficiency, and there is some confusion as to what it actually does.
Does it simply add 30' to all of your movement rates, is it only for running or charging... I'd simply like to hear a slightly more in depth description of how this Proficiency works.
How does that work out with Encumbrance from just "I am carrying this much weight" but not wearing disallowed armor? Just add 10' of movement to the characters speed?