Is it true that you can have either the ability to enter NAV destinations while in motion, or the voice command functions on a 2010 LR4, but not both? In other words, does having your dealer enable NAV on the go through a software update, knock out the voice commands? Does anyone have both NAV on the go and voice commands on a 2010? I'd like NAV on the go, but I rely too much on voice commands to give it up.