I've played Empire Ranch and Turkey Creek along with Teal Bend, Apple Mountain and Catte Verdera (I believe he only did redesigns/renovations of the last two). From those experiences, I could only say that he generally seems to favor medium width playing corridors and green sizes, avoids over-bunkering/using overly penal bunkering, and he's a big fan of downhill tee shots where the site allows (what designer isn't...).
I don't know that I could pick any particularly significant "signature" style. He just seems to produce challenging, playable public courses that require expert shot-making for the experts to score well and provide bail outs for the hackers.
# 18 at Turkey Creek is probably the most memorable of his efforts for me, with the fairway running right to left between a lake and a water-filled quarry and the green perched against the far side of the latter hazard. Not the most natural looking hole I've ever seen, but very fun and memorable.