(Late to this topic I know but here goes..)
I subscribed to his workflows for a year. You get access to his processing tools which are elaborate actions he has created from his huge knowledge of PS and pre press workflow. Essentially he uses Camera Raw or now C1 I think, to process a raw file with pretty much no adjustments made to it. You then run his action in PS to "process" the file. The results are very good; he does know what he's doing BUT with a decent understanding of LR or C1 I think you can achieve the same results. (He does have a good ability to extract detail in shadows, and seems to have a focus on wedding photographers struggling in bad / harsh light to control contrast).
His sharpening workflow is very good, but again if you understand the controls in LR I think you can achieve as good results in most cases. I found his sharpening was better than I could get in LR when sharpening very high res images from a camera I had used hi-rez (sensor shift) to create the image.
The down side to his whole approach is that he insists on mocking and deriding everything he dislikes. His tutorials are rambling, labored and bloated with his sneering and disgust at Adobe (and others) for how bad they are, how poor the processing or sharpening is, etc. In a way it's sad and a bit painful to watch; he's unable to simply say "This is my process..." he has to always put down the other ways of processing to justify his method! Also, as time has rolled along digital cameras have improved so much and digital processing has improved so much (LR & C1) that much of what he advocates is just overkill and out dated in my opinion.
Also based on my experience his whole operation seems a bit disorganized in terms of getting his webcasts up and running on time, and accessing tutorials on his website etc.
Alan.