ATO will likely be the most popular use for this pump. And unlike many wimpy pumps out there, the PMUP has enough pressure to push water up 14 feet vertically, it can even move the water up from one floor below.
This means you could put your RO water storage in your basement or downstairs in a utility room and it could still pump it up to the tank.
It also has a vertically oriented design with a bottom intake and top output that is perfect for use in jugs or other RO containers. Just drop it in!