The shutter works magnetically and properly. The most important advantage of the bag is that you have the camera ready to shoot super fast. Zippers not get me there in the house. On vacation the magnetic closure has caused some annoying but stops at the hotel reception: The magnetic stripe card for hotel rooms in the backpack was deleted from the magnetic closure - It took some time until we pointed it.
The hand strap of TZ10 I have connected to the metal fittings on the back of the case, so that the bag dangling when taking pictures on the camera and nothing is lost. Verso there's also a flat belt loop - if you like it. The metal emblem on the front bothers me a little, because I often lay my camera in low light on the pocket (while this is on a wall, etc.) - scratches risk. Definitely any user is disturbing that the mode dial is adjusted when inserting the camera - therefore only 4 stars.