Does anyone have a good solution for a decent keyboard that comfortably sits *over* the built-in MacBook Pro keyboard? We can skip the brass weights and high-profiles - This will need to be light for traveling daily from client to client. I've tried keyboards in front of the machine, but that puts the display too far from my eyes, and reaching over it to get to the trackpad sucks (I don't want to carry a mouse). 65% preferred, but maybe a 60%. Bluetooth would be convenient but not necessary. Maybe I'm dreaming...