Yeah but if I recall that movie was even more unrealistic than it had to be and also terrible. That second one looks like something I would read, although I question the legitimacy of the word biopunk.
Question the fuck out of the word "biopunk" because it's a stupid word. Basically all the technology in Clockwork Girl is bred because something something energy crunch. You either roll with it or you don't. I recommend "roll with it" as the book is every bit as immersive as Neuromancer was backintheday. The problem with Waterworld is it cost too much by a factor of 1000. It was never intended to be a big budget blockbuster - it was supposed to be another Steel Dawn. Imagine it cheap and shitty and starring Jan Michael Vincent instead of Kevin Costner and it'd be awesome and you know it.