By the way, shouldn’t such survivor exoskeleton be craftable by parallel-combining several medical exoskeletons? They should be salvageable from local doctors and hospitals.
Also, such powered exoskeleton can provide hard mounting points and power system for many kinds of wearable electronics: starting with bionically powered and securely metal-encased flashlight, PDA or mp3-player and going all the way to shoulder-mounted laser turrets (probably - only for XL exoskeleton of “Huge” survivors). “Smart clothes”? Pff… Will those hold and protect you in the zombie-apocalypse? No. Craft yourself some powered survivor exoskeleton =)