Les, I have an EvoS here.
An Eheim 1048 pushes 3.9lpm through the EvoS and 2 x 30cm long pieces of 1/2" ID tubing
The Iwaki MD-30RZ (50Hz model) pushes 9.4lpm through the EvoS and 2 x 30cm long pieces of 1/2" ID tubing, and a 20cm x 5/8" ID tubing on the pump inlet.
The inlet slot is 9mm long x 4mm wide, for which it flows into 5 x 0.8mm wide channels with 1mm wide fins (think White Water style design), leaving a total orifice area of around 20mm² for the jet nozzle into the channels. The inlet and outlet barbs are 9mm ID. The ends of the channels that lead to the outlet barb are 2.5mm high, and there is about 18mm² of orifice area leading to the outlet.
Such a design will not have ~1m H2O pressure drop at 10lpm, and looking at the PQ curves for the Eheim 1048 and MD-30RZ and the flow rates seen for each, they indicate a level of restriction that more correctly resembles what one would expect (~7m of pressure drop at 10lpm). It's quite clear the impact that such differences would have on the pressure vs C/W graph, and correspondingly pump selection criteria.
I've tested the EvoS and have a fair idea of its performance potential, but it would be pointless for me to state any of my data as it could never be classed as being independent.