Since it seems I hadn't brought this up before(I coulda swore I had), I might as well make a thread for it...
Not a game-breaking bug, but definitely an annoyance.
Depending on what you dual wield, you move faster. Like, as if you were using the speed combo.
Some people were complaining about it on the ABA server a while ago(which is when/why I thought I brought it up before), and it seems that people started to notice it again, and some(not sure who, as I haven't been on the server in awhile) even abuse it.
And it does happen both online and off(I remember testing this, but not sure which weapons it happened with the most).