On the official Olympus page HERE their charts do not list specifically my kit lenses, but in reviews of the tube people say they are using it on them. It should work on mine (14-42 f/3.5 & 40-150 f/4) right? I'm thinking the list is just not updated because I believe I am seeing the old kit lenses that came with the E-500.
Also any other thoughts/opinions on the EX-25 and its quality? Customer reviews are all positive. I think I will shortly be selling both my kit lenses anyway and certainly am looking at the 50mm f/2. I read the EX-25 is definitely recommended for this lens.