The Ocean Pro Magnetic Occy Holder is a great little accessory to have when diving as it will keep your Octopus clipped out of the way until needed.
The Split ring is attached to a D-ring on your BCD, with the occy hose through the holder. If or when needed, you pull on the hose and the magnetic hold will release so you can use your occy.
Being a emergency regulator, hopefully you will never have to use it so keeping in out of the way and keeping you streamline in the water is important.
Available in Black, Blue and Yellow.