Sort of, but others too.
At this rate I think he's earned to stay in the rotation for awhile. If Irvin starts throwing well and wants to come back, great. But there are 5 spots and the two best guys are clearly Gibson and Wells. I agree with SG that I'd like to see some more missed bats but he throws strikes and hardly walks anyone. I like what he's doing and I'm confused as to why anyone would want to try to move him to the pen at the moment. Or even move him to the pen for a guy like Irvin.