I have to admit I'm glad that got one of the brown ones (altho brown is definitely NOT my favourite colour!) .. the brown/tan case is so snug and nothing 'extra' .. I really wouldnt want the card holder/pen holder bit at all and the flap closure would annoy me too ..
I find the magnets not very strong but when I put the Cybook down I put it face down (the tan case is rather nicely padded too and so soft) and the magnets hold no problem ..
When I read if I'm laying down I am tending to fold back the cover but sitting up I'm using it like a 'proper' book .. wow I dont think I'll want to ever read a 400 page 'real' book again! .. this thing is so wonderfully light!