The reason most people don't like them is because they can tear the sheet metal around the upper shock mount and then you got a problem.
Shocks aren't designed to hold the weight of the car, the springs are. That is the first thing I ripped off of mine when I got it and placed them in the circular file.
If they are going to stay, they MUST be plumbed independently. 2 shocks, 2 lines and 2 air fittings. If they are plumbed together the air can force out of one and into the other when cornering.