Will you be able to level as a gatherer or will you have to pve or pvp to level?
There are no levels in the game and yes, you get knowledge points from gathering too. Well, for the first time you harvest something. Not like you get some knowledge points from each mob you kill. But you do get some experience harvesting. Hopefully you will be able to put those points into a tech tree to improve your gathering/crafting and not just buy skills with them.
hmmm.. and maybe they could add in more knowledge points for when you discover a new and useful use for that gathered item? or like mobs, items have several layers that must be studied and when you study them to that level you gain more knowledge and learn new uses for them? hrmmmm???