Did another test since the patch was released. Results.
Naked character with 3 athletics running from point A to point B on a map.
No weapons at all: 13.5 seconds
4 Great Mauls, none equipped: 15.5 seconds
4 Great Mauls, 1 equipped: 15.5 seconds
2 Great Mauls, none equipped: 14.5 seconds.
It seems they decided to include weight of all items for encumbrance now. I withdraw my earlier comment on the subject.
