The hard switch for WiFi/Bluetooth is great. You'll drain your battery fast with those services enabled in-flight constantly scanning for networks. Same pain as leaving the cell-phone on. I'm more worried about hurting my own devices (dead battery) than something on the plane.
I'm not sure of any laptops that don't have a hard switch to disable the antenna. I know IBM, Dell, Sony, Toshiba, etc. all have them.