This isn't what you asked, but may be worth considering anyway. Look into Advanced Library or P3dO Explorer which both work in conjunction with PRPC. These are ways of bypassing the Poser library palette altogether. You can arrange your library files in any way you like, without having to conform to Poser's folder restrictions - so you can, if you want, have a clothing item, smart props, and MAT poses all in one folder for example. I use PRPC and P3dO, and never normally open my Poser library during a session. :)