Convenient mic, sounds good, no batteries or adapters, LOUD
Pros: No adapters needed. No batteries needed. Well built. Travels well. Sounds good.
Cons: VERY high gain, will clip signal when capturing loud talent with iPhone core audio (iOS 6).
For a full review and demo see:
http://boldstatementmarketing.com/shooting-video-in-the-wind-with-iphone-smartlav-and-micro-cat/