Hi Buckeye
Here's a possible choice for you.

Clips

The mini or micro clips might work for you. You'd need a tiny split ring to attach it to the P4, however - won't attach without it (I think the 0.22 size available on the same page works nicely for that). I have a micro clip holding a Photon II on my keychain, so I can take it off if I want to.

Another thing that might work for you is the Fix-o-Loc keyring:
Fix-O-Loc

I found these at a local hardware store - in the display with the various keychain stuff.

I have a setup somewhat similar to yours - I have that quick-release connector you have on your keys, but I've replaced both the large split rings with Fix-o-Locs, so I can separate house and car keys...then other stuff on the keyrings are attached via smaller split rings to the Fix-O-Loc rings. I can take any of them off much quicker and easier than I could if it were on a big split ring.

Take care
Dave
(An Ohio Expat) <img src="/images/graemlins/smirk.gif" alt="" />