For deer hunting in a stand, a speed loader and a short starter is all one needs. Very seldom is more than two shots required. However, considering I always big game hunt with my small backpack to carry the necessary items for field dressing the critter, as well as several other items, there’s plenty of room for any additional ML components one might need.
For squirrel hunting, which I seldom sit and I'm most always on the go, I cannot stand a single shoulder strap nor a belt bag. Neither one is conducive for hunting in steep terrain. Therefore, I split the difference. The weight is distributed evenly and how I want and the bag can be slid forward or aft if one desires. The belt is strapped up high around my body, about half way up. I generally keep the bag slid back out of the way until needed.