AMV 8X8 Armoured Modular Vehicle

Hmm, Patria seems to be increasing their advertising of the AMV 8x8 and they're really pushing the "family of vehicle" concept.  Did you notice a few images of the vehicle undergoing testing by the USMC?

Question.  Why is internal storage of gear by attached infantry such a big deal?  If the vehicle is hit or sinks while swimming, its more stuff to try and get out of the way before you can cleanly exit and it requires the vehicle to be a bit larger than it has to be.  If anything build some racks to store the rucksacks or simply provide tie down points.