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A little update, Chrrox managed to figure out which files contain the meshes. I'm writing up the script to view them which is currently W.I.P. Here are some pictures for you to enjoy!
TOD is probably the exact same format although I've not extracted a mesh and checked yet. This is for Ratchet and Clank: Into the Nexus at the moment, I tried the script on Resistance 2 models which were posted a few months back on this forum and it also works on that game. There's a good chance the model format is the same between all the games as suggested by Chrrox. But even if it isn't then alterations can be made to support other versions
I think Chrrox looked at the textures and they were standard DDS files with a custom header (if my memory is correct) or headerless which is probably why viewing it in that PVR tool is not working. I don't think there's compression since if it was compressed you wouldn't be able to see that shape which clearly ressembles the other texture.
I'll take a look if I can find the textures and get back to you.
Actually the PVR tool is the only thing that got me anything close to the image.
The textures and be found in the Level_Uncached.psarc in the Highmips.dat file.
Also, as far as I can tell the formats for A Crack in Time all the way to Into the Nexus are exactly the same. It's just ToD and QfB that seem different.
Anyway I'm happy to see progress on this and await the script to view the models.