Technically even if you can find an E2 skin for POSE. The reason is that POSE is an OS 4.x or less emulation tool. The Tungsten E2 is a Garnet OS 5.X device. This can only be emulated by using Simulator available here:
http://www.accessdevnet.com/index.php/Simulator/View-category.htmlBut that said. If you are looking for skins and that, I suggest joining the Palm Developer network and using their device specific ROMs for Simulator. Google Palm Developer Network the first link gets you there.