Thanks a lot for your input guys! and for your advice on the other hundreds of threads I’ve read through as well.
Given what’s been said I wouldn’t go through the masters without some relevant design experience ahead of time.
I was lucky enough to secure an internship at a design studio in a CAD/engineering position, but was given the opportunity to help out on the design side of things as well. It wasn’t until then that I realized how horribly behind I was compared to the design intern.
If you still have some time before you make your decision, it might help to try and swing something similar at a large firm that has, for example, a marketing department. If not, the portfolio and project sections of the boards might be a good resource as well to gauge where you are. Make sure you try designing something first before you go comparing it though, good design seems so obvious in hindsight…