I'm learning it now and its quite nice to use. It seems to have all the hooks like MEL has but you might find that figuring the exact syntax to do something can be a little trial and error (for example working with UI elements). It doesnt help too much that there aren't many tutorials online so you have to almost totally rely on the help files - but they do give examples.
I'll have a free flocking system out soon that has been written in python so you could delve into the code and see for yourself
Si