I can't see anything about the physical durability of this. How tough is the injection moulded plastic? Can I expect it to be at least as tough as a metal key t

I can't see anything about the physical durability of this. How tough is the injection moulded plastic? Can I expect it to be at least as tough as a metal key that I can safely keep on my person all day regardless of what I'm doing? Is it waterproof? Being transparent looks cool, but doesn't it make it more attractive to opportunistic thieves? What about something more plain that just looks like a key fob?