They largely are, but it never hurts to summarize.
This does not appear to have been tried yet. Theoretically, it might be problematic, because the Vacuum plastic becomes moldable at a lower temp than the Intuition liner. But there's a difference between a thorough heat-through of the kind you get by cooking a liner in a convection oven for 10 or 15 minutes and heat transfer by conductivity.
3) As asked above, can one go for a "wider" fit by adjusting pressure, and still get performance, or does the shell truly mold so well that you don't need to allow for specific trouble areas like metatarsals or navicular? Phil's comments about the toe caps make it sound oddly like just molding a typical liner, rather than a shell (which was causing the excess room, shell or liner?), while Jim's comments suggest that you go for heel fit, just as with a traditional shell, then let the machine do its thing in front.
Phil and Jim padded my styloid process to ensure a little extra room in my trouble spots. My understanding is that the amount of pressure used probably has more to do with the amount you want the shell to compress than anything else.
No flex ratings are really accurate across boot lines. That said, they do feel a bit softer than I would expect from a 130. However, it's my understanding that -- surprisingly enough, and unlike conventional plastic -- the flex of this plastic stays relatively consistent regardless of the outside temperature.
I believe that mine probably did gain a little length in the toe, but I'd have to shell fit them again to be sure. Before molding, mine were a pretty short shell fit -- probably in the 5mm range.