I've seen Mike Lew here in the UK and attended a couple of small workshops he did and he's very good.
I first heard of him through the books Vic' mentions, and "Victims No Longer" was inspirational to me, it still is.
If you get the chance to see him take it, he's got a bit of showmanship, or should I say he has a strong personality with a sense of humour ? whatever - his knowledge and commitment is total, so the showmanship just makes it easier to engage with.
Dave