Using a Piranha model that I grabbed from GrabCad, I was able to turn it into a wall mounted bottle opener. I have not had time to print this magnificent thing, but there is no part that worries me. I believe this print requires supports and I would print this on a raft because I don't know how it will come off if you dont. All you need is a quarter to use to pry the bottle open, and you can insert it in the slit under its mouth.
Print in whatever color or quality you would like. I wouldn't chose an infill lower than 10 or 15% personally.
I would print this with supports and a raft!
You need a standard US quarter ($0.25 coin) to be placed in the slit in order to open a bottle. You can pause the print after it has finished making the slit and insert the coin, or you can wait until the print is finished and slip the coin in (both should work fine)
I hope all goes well with the prints, thanks, and let me know how it goes.