Since I have a bag for the Z10, I've also brought the original BlackBerry case for my new Q10. + Processing top, beautiful seams + Leather feels very well and does not smell. + Perfect fit, nothing wobbles or slips + Magnetic Switch is working properly (no constant switching on / off with small movements as another reviewer said) Maybe a small minus (but may also be due to design of the smartphone itself): Unfortunately, the Q10 does not turn off when it is placed only on. The Z10 does what I find extremely handy.