I've normalised the base sounds, re-recorded the spacial movement and in the end had to replace what I call the 'clash' sounds... I ended up using my voice. :) I'm pretty happy with the result, though I do feel that it's still missing something.
...
Thus, I met with Alistair today. He said he liked it but if I had more time, he had a few changes worth looking into:
I can't do anything about these suggestions yet... Will definitely do it later though.