I attached the Guarder assault pack to my interceptor for LC III. There were definitely times when it was helpful for carrying extra ammo though for the most part I didn't use it too much. There were definitely other times when I really got tired of hauling it around. It's really a judgment call, but I'd recommend laying out everything you think you'll need, getting rid of half of it, then trying to make it all fit on primary gear (ie vest and drop-leg pouches). If you have a butt pack, that would probably be more than sufficient. Also, one of the biggest trend in big games is that for the first scenarios everyone goes out looking their best with all sorts of extraneous crap, but as they get more tired and more focused on competing than playing dress-up (which, although fun, can be more of a hindrance), they ditch everything down to the essentials. For example, I started out with Interceptor vest, all mags, drop leg dump pouch, pistol on drop leg holster, guarder backpack, extra batteries, a bag or 2 of extra ammo, extra food and water and all sorts of field repair kit. AFter the first scenario, I had ditched some of the mags, the drop leg stuff (including pistol, though that depends on how much you trust your AEG) most of the crap in the backpack. If you can fight your most effectively with a full ruck for a whole day, then by all means do so, but shed any extra weight that hinders your performance and cut down to the bare essentals.
