Rotating a EditorGUI.LabelField (or making vertical text)

Hi, I've been trying to rotate a LabelField by 90° (or -90°). I tried using the GUI.matrix and the EditorGUIUtility.RotateAroundPivot() function. This last kind of works, but it rotates the whole component. If I do another EditorGUIUtility.RotateAroundPivot() with an negative angle to reverse the transformation, I won't see any rotation at all:

 for ( int i = 0; i < characterNames.Count; ++i ) {
     EditorGUIUtility.RotateAroundPivot( 90f, checkRect.center );
     EditorGUI.LabelField( checkRect, characterNames[ i ] );
     EditorGUIUtility.RotateAroundPivot( -90f, checkRect.center );
 }

All I have seen are GUI (not EditorGUI) related issues, don't know if both works the same underneath. Btw, I am using these inside the OnGUI() of a PropertyDrawer. Any help or direction will be greatly appreciated.

Thanks!