What is the reason for the changed recommendation? Has the Epson Advanced B&W "driver" changed a lot or something?
The Epson print drivers for Mac have changed...ABW Mode can only be accessed when you set the CM option to Managed by Printer. This doesn't apply to Windows. This is a side effect (unintended as far as I know) of Apple, the print drivers and applications being designed to avoid double color management. In general, the idea is good when working in color but I think it's a bad idea for the ABW Mode. However, it's unlikely this will be changed back so we have to live with it.