Not my set - but then I don't think any of us really use the feature. I imagine it's more of use when your whole diary is FO - people who are MO tend to have small friends lists anyway.
I use a similar feature on LJ, where I and my friends all have FO journals, but we refer to it as a filter there.
thanks. EL is exclusive list. it's a feature for Xtra users to make ultra private entries for just a few specific people rather than everyone on your friends list.