I did it for a while, a few years back but dropped out. I work in IT but found the workload of this course extremely heavy. Indeed I'd say about 60% probably more had dropped out by the time I did. The people that seem best able to manage it, seemed to be in occupations, that had more free time to spare than most. Could take a week or so off on a regular basis etc. The work load was a constant point of friction in the class I was in. As I was leaving they offered me a more flexible schedule of the modules that took longer, but it was too late for me, why they didn't offer that when people were struggling, was a bit baffling.
The elearning system they had moodle I didn't find much good, as most of the students on my course used it very little. As a result there wasn't much of a group effort and most people worked on their own. The campus itself was a little bit souless, so no one really spent any time there either. So you'd want to be happy working on your own a lot, and have a huge amount of free time to do it. I think its a bit mis leading they way they present/advertise the course. Its not really a part-time diploma. Its a full time degree course stuffed into a fraction the time.
That said the Lecturers were extremely good and I enjoyed the most of the subjects. It was well worth doing if you have the time to complete it.
If I was doing something similar, again, I don't think this style of course suits me. I'd either want something with a more flexible module structure, with options for catching up if you need to. Also something with much more class time, as I think you learn a lot from the lectures and other students, much more if you are in contact with them more. I think any of the other courses which are similar, spend 3 nights a week and every other sat covering the material. So if you think of that, plus your own time completing projects and studying thats a more realistic picture of the workload.