When I was shopping for new cabinetry I was informed that yes, they are specialized for the angled install. I chose not to have either the drawers nor a lazy susan, but hinged doo allowing for big open space with corner shelf to store the mixer, giant stainless mixing bowl, the huge cookie jars, and electric fry pan for the pancakes for 12 events that happen only a few times a year!

These particular handles were routed into the corner drawers (a custom hole was cut into the drawer face for the handles) by our installer. It can be done but it takes a skilled carpenter to pull it off cleanly.