I think the tang on the ROO Diver is bigger than 18mm, so a different strap would been needed, the whole deployant is a bit of a bugbear with almost everyone i've spoken too, you need a good sized wrist to wear one, even then if it rubs the wrong way on the inside it's a nightmare to wear.
It's also annoying when you see so many pictures and this huge gap at the bottom/side where the deployant sticks out, why can't AP just redesign this thing, or bring out some 18mm tangs that are suitable for the RO and ROO
