Bought these for my daughter for xmas. They're really well made and look like they'd go through the dishwasher easily. The take apart hinge looks solid and won't collect dirt. I didn't try the bottle cap wrench but it looks like it would work for small bottles, e.g., ketchup and soy sauce, not jars, e.g., honey or jam. Maybe it would work better to grip the points.
Henckels makes good stuff. I visited their factory when I lived in Germany > 30 years ago and everything I bought then is still functioning great.