Not that there is anything wrong with the figure, but I'd rather not use Pen's or Fritz's, as long as they have clone heads anyways. The Security Force isn't the Empire, so they would have any Jango clones. Not that the Empire does either, but that's a different story all together...
The base figure and the helmets look great, just not the head. I think if there were to be different heads on them it'd be fine. As is though they don't get my vote.