They are making them from other screens also. I have a friend who just installed one like you linked to. It had no tab for changing it out.
I tend to make my own additions if needed. The screens are easy to make, and install.

I realise this is a pretty old thread. But I just made a new screen for my DS. I used a ME Super screen and reduced it's size to fit.
I covered it in a blog posting a short time ago.