Hi Hemi! fins!
There is a string on new posts on this too...
I got the Raven Vangaurd 2 in November right after I got my 23/gen4 and love it. It is very comfortable, very minimal! And easy on and off. It you have issues with the Vangaurd, the phl skeleton is another iWb. It uses one strap like the raven, which I like. It shows less on the belt, less bulk than iWb with 2belt loops and allows for some cant if you want it. This link is a very good comparison of the two. I wear both a lot now, with my 23 and new 27/4. Phl wins points for easy draw and reholstering.