If you are considering getting an MSc in Environmental Management for the sole reason of versatility, I strongly recommend that you thoroughly research the course content and ensure that it is interdisciplinary before taking any further action otherwise you may just end up as restricted as you would be with an MSc in Geophysics. Universities have a way of colourfully advertising and exaggerating their courses so I'd advice you look beyond their websites and prospectus.
I have an MSc in Environmental Management from a top UK university and even though I'm better off for it, I must admit that the outcome turned out to be way less than I had anticipated before I joined the course. This is because in my opinion, there were certain missing elements in the course which makes me feel a little bit less confident in my versatility. But then again, that's just my opinion.
Goodluck and I wish you all the best.