I started reading this story way back in 2014 when it started. I liked it then and I like it now.
PLOT: There is only so much you can do with an "aliens transport someone to a prehistoric planet" story that hasn't been done (and it was nice that he gave CMSIX the credit due), but there were enough plot twists & turns to keep it from being boilerplate. There also was plenty of unique intrigue, romance and erotic content to make it well worth reading. (The very last sentence made me laugh, as well.)
TECHNICAL: Well written with no noticeable errors.
APPEAL: I liked it, but I didn't love it. It certainly is worth the read, however, the biggest down side, IMO, is that there were too many characters. I ended up having to re-read from the beginning and I still lost track of whose wife was whose. I also think I'd have enjoyed it more if it would have been a few chapters shorter. (and this might reflect my frustration of having it go on for so long).