I've been a big fan of column line arrays for years. Always good to see more options out there. There are several brands I'd have no problem using. Maybe total weight isn't much different compared to more conventional set ups, but my back is convinced that it hasn't had to lift heavy things for years. Set up and tear down in minutes is always great as well.
As with anything, there's always trade offs and nothing is perfect, but I'll think you'll find yourself using the line array A LOT of the time.
I have the L1 pro16's and pro32's as well as some of the older L1 models. I currently use the 16 or a pair more often than anything.
For cocktail/ceremony, I believe these are overkill. I use a much smaller, battery powered s1pro for these.