The case is well finished and fits the Z10 snugly.
It bulks the phone up a bit but I guess this is the compromise for the protection provided by this type of case (probably not for your top pocket).
The nature of the design means that you cannot see the red led flashing if your phones on silent but the shape lets you have your headphones in and still have the case closed. Depending on the frequency you pick up and look at or use your phone you might find opening the case and lifting the cover a tiny bit irritating and therefore you might favor a more open style rubber or slip on case, alternatively you could slide your phone out while in the office or home. I am being a bit picky now but three corners of the Z10 seem a bit exposed if you dropped it on a rough surface but I feel you would have to be very unlucky for the leather edges not to absorb the impact and not protect the phone. Overall a good well made product for transporting your phone and giving you a good degree of confidence its protected at a reasonable price.