Removing them is easy, remove grommits, undo 2 bolts passenger side 3 drivers side (handle is also attached to the manual lock).
putting them back in, passenger is easy just slot the metal bar in and bobs your uncle. drivers side slot the metal bit back in, and give the interior handle a tug and it'll slide all the way in much easyer, then just do up the bolts.
as for locking with them off, it'll close and lock, then just canny a screwdriver with you, unlock as you normaly would, then to open the door just use your screwdriver to push the blue bit inside the door down and pull it open sorted!