I use this - at home as well.
They are not folding, bigger than the P38/58, and are made from stainless steel
. My mother had one from before I was born, and I bought myself one when I moved out 23 years ago. It's a really good and simple can opener that doesn't take up much room, but always works. Of course it is not pocketable, but for the galley
it is perfect, in my opinion.
I have seen cheaper imitation ones, made from alu, or what I would call "tin" (sheet metal, more like), but this one just keeps going.
Edit: The one in the picture is a left-hander. Mine is a right hander.