I kind of view them as a cross between a human and a droid, personally.
Yeah, we treat them as biological droids (don't care about canon). The players can shoot them without caring about morality issues (save for our marksman, who feels these are mercy-kills and prays for the release of their souls when she snipes them...)
The Empire mostly treats them as disposable troops, as they are unswervingly loyal, easy to mass-produce by the billion, and of a reasonable fighting standard for cannon fodder. There are cloned leaders, elites and specialists that may be of Rival or even Nemesis standard. The individual minions are not especially fearsome to a PC-level character, but they are dangerous in the vast numbers the Empire fields them.