I also love Sluggy. I don't know why you think its right of center. I really haven't seen anything to suggest there is any political motivation whatsoever in the strip other than a yearly 'Get out and vote' message.
supporting the troops, lack of simplistic PC talking-point "morals" (unless such things are being mocked), and inclusion of such concepts as loyalty, duty, obligation, and (oh, come now, need I say it? remember alternate-Zoe and Torg?) REDEMPTION
all suggests to me right-of-center.
not politically Right, exactly, but... it has a spine and is, oddly, wholesome