When you apply sketchy lines to a view, annotations (such as dimensions and text) do not appear to be hand-drawn.
Issue: Sketchy lines apply to model elements in a view. They do not apply to annotation elements, such as dimensions, grid lines, levels, text, section markers, elevation tags, and room tags.
Solution: Revit LT does not provide a way to make dimensions, levels, grid lines, and other annotation elements appear hand-drawn.
If you want to use an informal font for annotation text, create or modify an appropriate family type to use the desired font.
Examples