[More wall work! Maybe soon he can start working on the roof. A smile resides on Gundam's face as he continues his work - and corrects Yuffie's from time to time.]

I do not see why he would not. While he can be wary of strangers, I foresee you winning him over without much effort. He would see that you respect and appreciate him, which both will go a long way. And given your easygoing nature, he may come to trust you relatively quickly. In short, it should be a simple matter for a keen ninja warrior such as yourself.