The biggest difference is that the pencil writes in a lighter grey color. The grease version writes in a dark black color. It could pass as a black pen, crayon or possibly even a marker. For stage, if you want your audience to see the writing (which isn't always the case), you'd want to use the grease writer.
Answered at 08:36am on July 1st, 2019 by joshburch (261 karma)
Would you say the grease can pass as a sharpie close up/parlour?
Answered at 02:35am on July 2nd, 2019 by ccmwl (2 karma)