I received my Hyperflow this week.
48 sec to pump the first liter of tap water (from dry filter to 1 full liter)
26 sec for the 2nd liter wet.
7.4 appears to be the minimum weight of just the pump and the inlet tube and pick up. I will have to see how it works on the next family trip.
Here are some pics of the components and weights.

Pump

Inlet hose and pickup

Filter cap

bag

Instruction books

