We came up with a pretty cool method for doing this at gametextures. Will try to share it soon. It's a little involved but it produces some really accurate masks and results.
My Urban material for the SDMC will be on Substance Share soon! Here are some renders. They vary in dirt, moss, manhole shape, lock number and rust. Crosspost from here.
It is, Epic will modify the changelog soon. You can now download the new plugin from this page: http://www.allegorithmic.com/substance-ue4 No need to recompile anything, it's now a "true" plugin. Enjoy!
Awesome! =D That's so cool that you followed my tutorial thank you! Like I said in the videos, I'll be getting a tile tutorial up and running soon, I promise =P
Amazing, thanks for the breakdown, will try all that stuff as soon as I get the chance. Also, the speed which the guys at Allegorithmic spits out updates is killer, good to see such a powerful program improving so fast.