Cinelli Vigorelli 2010: max width tyres? brake drillings?

To all you Cinelli Vigorelli 2010 frame owners.

• What width tyres will fit on the frame? This guy claims that he uses 700x32mm, but is not the 2010 frame. Velodromeshop.org.uk answered to me that the model 2010 fork will accept max 25mm.
  
• Are the drillings for front and rear brakes? My understanding is that the holes are drilled but that they have been plugged and painted over. Is it difficult to reopen them?
  
• What is the shape and diameter of the top tube? Is it round? The reason why I ask is that I’m wondering how to attach the brake cable to it. If it is round, then I’ll use metal brake cable clips.