I liked to wear my Canon G10 around my neck with the supplied strap. Unfortunately, the G9X Mark II only came with a wrist strap. Can't yet comment on how durable it is, but this band works great with the G9X Mark II.
Pros
Lightweight and Comfortable: High quality fashion print cotton shoulder strap with high-strength plastic quick-connect system, lightweight and comfortable to wear around the neck or back shoulder for regular use and travel