I've found the tilt mirrors very useful... then again, the IS350 is half the size (and half the hp but that's another thread) of my previous car, so parking and such is pretty easy for me...

For avoiding theft, just use the friction mount... then the whole thing goes into the console when you put it away and nothing is visible, so nothing to break in for. The little flat area right above the center stack is -perfect- for putting a friction mounted Garmin GPS on it... plus putting it there/removing it takes 2 seconds that way.