Personally I think the process of shrinking and growth is the best part. And as sol said, it's Alice in Wonderland- it'd be odd NOT to have a good bit of both.
If you've paid attention to Z's body of work, he has several comics that have ONLY growth, and he's had some situations that involve things other than just sex (GTSV, My GTS Ex-Girlfriend, and Goddesszilla come to mind, among others).
This was really good, btw. Liked the art style, and I thought it was pretty sexy. You're a bastard for stopping it just before the next class, Z!
Also, super excited for Clones 2. Any idea on an ETA?