Skivittlerjimb wrote a review of Backcountry Access Alpine Trekker Adaptors on November 5, 2002
I've owned a pair for about 3 years and they're fine if you just need to get up a slope of moderate angle. They leave you pretty high off the ski and climbing very far in alpine boots isn't too fun. Still, if your goal is just to get above the lifts or climb a ridgeline and not to tour, these will do the trick.
Pretty beefy construction and fairly easy to use. Heavy, though. I'd save the $179 and buy a pair of Diamir 2's instead! (Those will work with alpine boots, too!)