Hey guys im looking to purchase a tool backpack. Ive been using a electrician's tool pouch to carry all my tools around but its just getting heavy for me especially when carrying multiple like parts or motors. Im looking to purchase either the klein backpack or the toolpack 4 pack backpack. just wondering how sturdy it holds as well as if its waterproof (alot of rooftop work). Also does anyone know if toolpak is sold locally in ontario, canada?