My impression is that nobody cares about your binder. The inspector/DPE wants to see you teach. The lesson plan binder is there for your own benefit. I had both paper and electronic copies of all my lesson plans. The inspector never looked at them. He wanted to see me teach several lessons, he didn't care what my binder looked like. That said I still believe creating my binder was one of the best things I did in preparing for the exam and for teaching flight students, it made me think through the lessons and have a plan of attack with illustrations and resources right at hand.
The one thing my inspector did say is that he wished more people took advantage of technology. He sees everyone show up with a paper binder and a pile of books. Why? We have computers and tablets and video players all around us but he said he's never had someone show up with some interesting videos to show as illustrations during the checkride. He also wished people were more creative with some other illustrations, he said he'd love it if someone showed up with a big RC airplane and used that during their illustrations. His point was that alot of this stuff really can be boring, but we have so many ways we could make it really fun.