This is new but there would always be pros and cons for this.
Pros:
- Since it's lightweight and small, it takes up little space. You can easily put it in your pocket or hang it wherever you like.
- It's multi-purpose. It depends on how you use it for.
- It's pretty much of a good design for such an innovative tool.
Cons:
- Maybe lost or misplaced easily.
- It may be difficult to be sold in the market.