I installed the Victron Smart Shunt 2 weeks ago, and it took me about a half hour. It's bluetooth so I can see what's going on from both inside the camper and inside the truck.
Notice the bottom picture is what I see on my phone. This photo shows at the current rate of discharge I have only 8h 19m before I reach 50% in my battery. This was my first configuration and the current status doesn't show numbers like this... fortunately.