Yes, I tried that mod out for size (literally). It works, and I doubled what he would usually grow to. But, the drawbacks so far are that he sometimes can't navigate through a large and well-built city, and he can't accurately hit enemy platoons with trees or his ground-based smash, stomp and swipe attacks.
However, if you are prepaired to make your town less-cramped, then he should have no problem walking around... and as for platoons, well, get him the fireball and/or lightning miricles. Those hit, and wipe out just about everything. xD