I have no doubt that the "Schooner" does what it is supposed to do. But its effectiveness depends on airflow outside of the case, just like other heatpipe solutions like the Zalman ZM80D-HP depend on airflow within the case.
I can understand the appeal of "noiseless-fanless" solutions on top of heatpipes. But they all vary positively in effectiveness with airflow, and in order to have "more" airflow, you need some sort of fan . . . somewhere.
The Fanless 103 CPU cooler by Thermaltake was reviewed in a comparison with other coolers which employed fans. Since the Fanless 103 was "sold" as a "fanless" cooler, it was tested without a fan -- despite the fact that ThermalTake either recommended or suggested using it in conjunction with a 120mm rear exhaust fan. This, of course, would be an improvement, because you are going to have some sort of exhaust fan anyway, and the Fanless 103, in such a configuration, would eliminate a CPU fan.
For that reason, the Fanless 103 scored "badly" until you recognized that it wasn't even tested in a configuration that was recommended by the manufacturer.
I'm satisfied with my Zalman zm80D with option fan. I'm skeptical that putting the other end of the heatpipe and fins out that back of the computer is going to make the solution more effective than one with a fan. But . . . suppose it is . . . more effective. You still haven't got a choice with this design to increase effectiveness further, unless you park the back of your computer near an air-conditioning wall vent.