I have a Pin2K vpin and its awesome. I am using an original pin2k glass. I got the glass cheap from a friend since it was scratched, but it works fine on my cab. Its about 1/3 tinted at the top and clear the rest of the way. If I was going to do it myself, I would tint it maybe 1/4 of the way from the top with the NightShades product available at autostores.

Well it looks tinted to me.

For his purpose the NightShades Tint would work fine. It just has to be tinted at the top to show the reflected DMD/or displays on the upper part of the glass. You can get something like the size of a large SEGA dmd image on the glass if you use a 23 inch LCD monitor reflecting down in the backbox and it fits nicely. Not sure how far you got in the project yet.

Interesting. I have a real pin2k cabinet that i converted to a pin2k vpin and use the pin2k glass with a 23inch lcd inverted and i think it looks terrific. The dmd display is huge since it fills the back of the playfield section. If i had to say anything negative about the setup is the back area of the playfield is a little darker due to the gradient in the pin2k glass.

Here is a quick vid of the new scarface table
http://m.youtube.com/watch?feature=relmfu&v=LE6a_g-HA50