Tyres that are relatively fast rolling and light are always going to be be more fragile than heavy tyres with thick treads and sidewalls.
It is true that some compromise has to be made to make a tyre light and fast rolling, but that doesn't have to mean fragile sidewalls. Vittoria Open Corsa CX manages it by using a very high-TPI casing that is doubled up at the sidewalls, and by only having only a minimal amount of rubber on the tread.
Of course people want more than a minimal amount of rubber on a tyre like the Pasela, so it has to be made fast-rolling by having thin sidewalls. I'm not sure they have to be
quite so fragile for them to be pretty fast, though. A slicker tread and higher TPI would help speed it up in other ways. I wouldn't mind a
slightly slower tyre that is as puncture resistant and durable as the Pasela, and with black sidewalls.