Just an update
I've checked the printer drivers of the 1100s. The driver for the stylus T1100 and B1100 comes in an installation file and is larger than the work force drive. But the driver for the T1100/B1100 are different (If we are to base it on the installation program which ask you to select if you are installing for a T1100 or a B1100).
In this regard, we can say that the T1100, B1100 and Workforce printers has some minor differences and in relation to my earlier post, the way I understand it, the workforce is optimized for office use and the stylus is for photo prints. I am not sure where the B1100 falls under. I also seem to come across an office stylus and a photo stylus. Forgot to note the link but at any rate, however minor the differences, based on the epson driver installer, at least the T1100 and the B1100 have some differences. It is also safe to presume that the workforce, which has a separate driver also has some differences.