Simulink Test Manager is very handy and allows to track the progress in its window (sltestmgr).
But I could not find how to track its execution programmatically after running command sltest.testmanager.run.
The only callbacks that affect Command Window (e.x. disp() ) are Setup Callbacks but due to the Test Execution Order they are useless in that case.
Such progress tracking is much needed especially when using long or many test cases.