Certainly, the smartest dogs I've owned or been exposed to have been Bolio dogs. My little Invicto II female is incredibly intelligent, you could see it in her from the time I picked her up from the airport, before she was five weeks old. The double bred Superbuck bitch I had is right behind her in the smarts department, the things she could figure out on her own were remarkable - and a huge pain in the ass. The thing that really separates the two is the Invicto bitch's MASSIVE desire to LEARN, and her attention span, which is impressively expansive for such a high strung little thing. In my personal experience, the more Bolio/Buck in my dogs, the smarter they are, and the larger their will to please is, and the better their overall temperament. They're like tiny little furry peoples.
I haven't had the pleasure yet of spending any real time with a Poncho or Vise-Grip dog, but I can say that one of the hands-down smartest BOX dogs I ever saw was a heavy Poncho male. If his owner/handler would've had a quarter of the dog's intelligence, he would've had an excellent chance of earning a nice title.