I actually do very little in post processing. I use Nik Silver Efex for all of the b/w conversion. I've developed two split tone curves that I pretty much use for everything. I'm using the same one on everything in this series. It also has a little vignette as well as some tri-x grain. I typically use red filtration (but sometimes green). I've added a square overlay into the Aptus, which follows it into Leaf Capture.
I try to spend a minimum amount of time in Photoshop