I love how the Addi Swing conforms to my hand. It makes for painless crocheting for me. Traditional hooks tend to give me hand cramps. Whether this hook helps you may depend on how you hold your hook or your hand size. In any case, I would suggest trying this if other hooks make your crochet hand hurt.
I like the bag and think it's great used crossbody. However, when using it as a hip holster, it has some issues. It tends to slide from its position at the hip, so you can suddenly find yourself with a not-so-cool frontal pouch. It's a nice size for capacity, but it's size makes it a drawback when worn at the hip. On me, it looks a bit large as a hip holster (I'm a petite 5'4"), but it may look more proportionate on someone with a larger frame.