Very interesting topic...

I as a "leaving user of dvs, live and also computers for djing and going to the hardware side again" made a little research about hardware emulation of Fade2grey effect and I want to share one found with all of you. It is only useful for those who have FX send mixer but here it is:

[ame="http://vimeo.com/19026422"]http://vimeo.com/19026422[/ame]