The method of Post 17, also works to allow you to open a downloaded HEX paramteric mesh and to view it in ParaView without even needing to run OpenFoam ‘checkmesh’ on it (but then of course you do not see the ‘checkmesh’ results in ParaView either.
This is a fairly quick way to view complex meshes before running a simulation on them using ParaViews more advanced mesh viewing features than the SimScale post processor has.