Not a weakness of the general HP design, but certainly of what can happen with two piece barrels. I have seen and handled a Browning HP with the two piece barrel partly separated. The buyer of this gun in particular was going to out some bucks to replace or repair the barrel. I am hoping the SA 35 has a one piece. One piece is very doable in today's CNC machine world.
Based on the pictures of early production/testing samples, it looks like it has a one piece stainless barrel. RemSport/TR Enabling makes one piece stainless replacement Hi-Power barrels, maybe they are actually the barrel supplier for Springfield Armory?