I certainly would reboot if I installed any of the above on an openwrt system (pertinently the one on S1 and S3 rigs) with nothing near the resources of the typical *nix box you are accustomed to.
Now for my question: Do you reboot your antminer rigs every so often (unlike the typical *nix boxes that can run for years un-rebooted) and why?

EDIT: - And if you REALLY think about it, we are talking about rebooting when you install the less resource wasting cgminer as witnessed by the improved UI response (and of-course the securiy patches). The point was, rebooting does NOT cost you a thing, and may indeed be beneficial since you still need to reboot the rig every so often.