and much of the textures and map-models would fit well to Unvanquished and would show of the new fancy rendering freatures as they all come with a normal and spec. map.
Yet, I wonder why none of it has shown up in UNV yet...
P.S.: License is CC0 which is basically public domain and thus fully compatible with the Unvanquished art license (e.g. CC-by-SA).
As far as I know these are not in use in another project yet... and for textures, plants and simple props it also doesn't really matter that much, right? Of course others might use them too (but in fact could do so with Unvanquished art anyways), but it's not a very visible playermodel or such.
Edit: I suggested to that guy before if he would be interested in contributing to a project and he basically replied that he does the stuff for fun and isn't really interested. But by all means, it would be a waste not to utilize these nice textures and models somehow.
I'm not so sure about "well fitting to unvanquished" in the title. It's more of a mapper's texture source to me rather than fitting well to unvanquished.