I used to keep cans of it in my car for when I would get hungry and I was out and about. It's great when used as a snack replacement, but I was never satisfied when I used it as a meal replacement.
Still, it was an easy sort of nutrition when I was on the go, and I knew what was in it, so I kept some around for a long time. I found the strawberry and the vanilla to be the only flavors I could stomach for very long, but I was able to drink those pretty much daily for over a year. Eventually I did just get tired of the stuff, though.
To be clear; I'm not a professional, this is just from my personal experience.
I hope all of that helps!