Hm, I played with kb&m and all was ok.
A few times the block-stance was incorrect and I died because the mouse didn't really register an upward movement, if the movement was to the upper left...
But I'd like to test this again^^

Overall: kb&m were complicated, not "natural", but okay-ish and doable. I mean you can also accomodate to the controls over time(which we didn't have much, just 4-5 days) ^^