I use the Tamrac Expedition 5x for my 4/3 system which consists of a G3, a G2 as a backup, and 5 lenses. This is my "carry everything" bag, it lets me carry the gear, filters, focus rail, remote release, lens cleaning supplies, extra batteries and charger, and to strap a tripod on the back. It's not "quick access" by any means but for the type of slow and contemplative photography I usually do, it's nice to be able to carry the whole kit and kaboodle together.