As soon as I found Pandinus imperator I knew that I'd got Snape's animagus form, and as soon as I started writing from his POV, he just took over and wrote it himself.
After standing up to Voldemort, I'm sure Harry would be able to handle the female Weasleys. Especially if he had a scorpion perched on his shoulder.
I'm so glad that you liked him, and that you enjoyed the fic.