I hope Sam won't mind me linking This, but it looks to me like the perfect example of how to score a batarde!
What tool is he using? A lame with a handle?
Yes, it looks very similar to The Weekend Bakery one which I use.
Looks like a home-made lamme
I made mine by hack-sawing the tines off an old kitchen fork. A few minutes of metal straightening and some filing finished the job. Works just fine.
An easy way to save 20 bucks.