The current EULA from the official page doesn't seem to have any restrictions for commercial use. So, why not using it, if it fits with your purposes?

And, ratchet, what are you arguing for? Joozey already showed that it works for him? It doesn't cost anything!

Joozey, considering the nice lowlowpoly models, I would like to see highpoly versions of them, too. But, as long as you are inspired to build these unique little monsters, keep that track, please!