Hi Jay, it's handy to have, but not strictly necessary. You're right, visibility is pretty good in the Liberty, and they're not actually such big cars. I used to drive a Falcon Wagon for work, and they are LONG vehicles. And together with the fact that it was full of boxes for work (up to the roof sometimes), I've reversed into a few things in the past. Mainly in tight shopping centre carparks. Oh, and the rock beside my driveway
. But when you go to 6-8 busy shopping centres a day for work, it's obviously a much higher risk than what I do in my personal vehicle. That was before I got the Lib, but I was still keen to have the cam for that reason.
The main 2 things I find useful are judging Distance, and Night Parking. Trying to judge if you're 1m away from the car behind, or 30cm is hard without a camera (or parking sensors). Especially if the other car has a towbar or bullbar. It's just nice to see the Green/Yellow/Red lines on the screen, so I know I'm safe to reverse for another little bit.
And with my super-bright LED reverse-lights (thanks to Leo on this forum), rversing at night is great. The camera had good night vision - probably because my reverse lights light up the area behind my car, even in total darkness if there are no stree-lights etc.
Unlike you, I had never used a reverse cam before. The downside is definitely forcing myself not to only look at the screen. A few times I've been focusing on the screen and almost take my side mirror out against a pole.