Yeah, this guys is great! I don't think I've ever seen "Humanoid Frog" done so well- the only one close is the Warhammer "Slann", though those are more like Evil Fat Toads- this guy looks agile and skilled.
Ah! I saw this in the sourcebook! I'm happy to get the opportunity to tell you that I really like it! Friend of mine is playing one of these as an alchemist/bombadier. Loads of fun - he speaks as if he's got too much tongue. Awesome picture.