Testing out the Y and left click to command pets. Not a fan of Y but i'll rebind that. The Familiar seems to work fine, hold down Y and left click and off he goes. The Winged Twilight on the other hand does not give a damn what you tell it to do. It can be out with a Familiar or just by itself. If by itself it sits around doing nothing as it always has until you attack. With the Familiar the Twilight will sit until the Familiar goes off to attack something, then it will attack what the Familiar does, but doesn't always change targets if you change what the Familiar is attacking.
If you gave the option to command them separately that would be great. Given thats unlikely can we at least get both pets attacking on the same command instead of keeping one dumb.