Is there anyway to check mesh quality in 3D Slicer, directly?
As an indirect solution, I saved the mesh in .vtk format and then imported it in Gmsh and used Statistic (below), which shows a great quality for the mesh generated using Cleaver method!
We had a project for this years ago with an earlier version of Slicer. Many of the classes to quantify and visualize mesh quality would probably be easy to port the current version. Porting the UI would be harder, but something basic could probably be done without much trouble.