VTF plug-in

There exists a plug-in for Photoshop which makes it possible to import and export vtf textures.

http://nemesis.thewavelength.net/index.php?p=39
http://developer.valvesoftware.com/wiki/Photoshop_VTF_Plugin

Could someone port it over for GIMP or would this be to much work?

By the way: The vtf library is open source and available here:
http://nemesis.thewavelength.net/index.php?c=177#p177