I kind of agree. My issue is that I think that in his consumption of and by the form, he lost track of the script and acting far too much.
I thought the ending revelation where, it transpired, the heroine has gills, which she herself hadn't known was masterfully subtle.
I hope that was written in blue ink, Smiffy, cos I had it taped from the first mention of the scar. I mean, hell, the movie starts with her wanking in a bath...