The weirdest part is how calm he is living in a house with Skyler...the person with the most reason to have him killed. Though, I suppose a lot of abusers put themselves in such positions. Gus was smart enough to live alone, though.
Well he's not concerned about much more obvious threats that could come from other drug dealers, powerful drug cartels, or the cops, so I'm sure any danger posed by Skyler isn't even on his radar right now.