My normal qualification time is November, each year. As yet I haven't had the Rohrbaugh very long so didn't even own one the last time I had to qualify.
However, each state and indeed each department is entitled to set up their own parameters. In my state the Post Board set the requirments for the course of fire. The annual qualifications are run by the county agencies except for the State Agency and we run our own. We are only required to qualify with the type of weapon we are going to carry, which in my own case means I must qualify with both a semi auto and a revolver at each annual qualification because, depending upon what, where, why and when I may be going somewhere, I am liable to be carrying any of a variety of different firearms at any given time. We are not required to qualify with the exact weapon we will have on our person. The requirements for a HR218 permit may be different in other states as the national law doesn't actually specify other than annual qualification (not a particular course) and renewal and specific ID requirements for retirees.
I don't see any problems with qualifying with a Rohrbaugh at all over that particular course of fire. Our course also, doesn't go beyond 15 yards and while it does involve forward, back and lateral movement while shooting, and also involves shooting with your off hand on one stage, I don't think it is particularly challenging. It doesn't require a timed reload in our case.
The HR218 permit is a nice benefit for LEO's both active and retired. But many states, mine included, also allow one to have a state issued CCW that is not tied to your department and one can have both. If my Rohrbaugh was not within the parameters of one, it would surely be allowed by the other. I dont' have any trouble shooting it but I do think a timed reload could be a handicap. Next time I get a chance I will give it a try on our HR218 course.