I want to pick up a Guncon 2 for my PS2 but Ive noticed that is uses a composite video pass thru(?) and I use component video cables so do I have to step down to composite to use a Guncon 2?

http://bonusweb.idnes.cz/obrazek/guncon2_2m.jpg

On a semi related note, can I use the Japanese version of the Stunner gun on my US Saturn?