Pros: Stiff, precise, great-fitting (for narrow feet), warm
Cons: Pebax plastic and alpine bindings?
Here in Maine, I've been demoing advanced and expert-level skis at Sugarloaf. The skis have included the Volkl AC50s (Zowee!), the Stockli Cross Pro (Competent but humorless) and the Volkl Tigershark 11 Foot Power Switch (We have liftoff!). Since I was skiing with my 21-year-old son, I went at warp speed on Sugarloaf's "packed powder," hard snow, really hard snow, near-ice and the real thing. The boots were solid and responsive (and very warm) regardless of speed or conditions. Don't be fooled by the marketing; To me, the Typhoons aren't traditional AT boots. They are advanced/expert Alpine boots with a lot of nice AT touches. They have a terrific walk feature. They have easily replaceable buckles. And because of the Pebax construction, they are very, very light while being very stiff.
The Pebax, however, could be a problem in the long term. It is softer than other plastic I'm used to on alpine boots. I bought demo boots that had been used before. There were already indentations where bindings had marred the heels and toes. Other Scarpa owners mentioned this wasn't a problem. One even used a hair drier to remold the heel and toe (!) if the dings got too extreme! It is a similar situation with Scarpa telly boots. The boots themselves are rock-solid but the plastic can get misshapen by some bindings.
Bottom line: the Typhoons are great boots for narrow-footed advanced and expert skiers. Don't worry about the AT heritage: embrace it, especially when you walk comfortably in your Typhoons across some rutted ski-resort parking lot.