Yes he has a full slate of pitches, and occasionally changes arm angle.
That is why even though I agree with this article for the most part, I would actually like to see Ashby in this role as apprentice. Coming back from myriad arm issues, combined with the fact that he really is only a three pitch pitcher and has performed better in the bullpen, I think he needs to be brought along very slowly and handled with care. Gasser has already proven he can handle a large workload and retain his stuff throughout a long season of starts.