Compact Whistle Bottle Opener

Basically combined the hoeken co-op bottle opener http://www.thingiverse.com/thing:1813 with interior structure of the crkoolkid better whistle http://www.thingiverse.com/thing:403012. I tried to make it as compact as possible without impairing the function of the bottle opener or whistle, and added a hole for a key chain. The whistle can literally bring pain to my ears, but luckily I can mask the pain with an ice old beer

EDIT: Added a less compact, more ergonomic version