Eve Langlais seems to be hit or miss with her writings....or perhaps I am a scifi fan and prefer my men big, clueless about emotions and protective of their partners. The genre of erotica with men who can go forever and not get tired just fascinates me, too. 
 I was pleasantly surprised with the twist in the story...but more how long it took to figure out. The sex scenes were just shy of clinical but that is to be expected with cyborgs, no? Just the facts. 
 I am looking forward to the rest of the series.