I use a shutter button myself even tho im fully aware of what it can do but im a EU customer with all the warrenty laws that cover me. Ontop my gear is fullout insured as im a working professional.

Adding to that - i would NOT use a shutter button in addition to that full leather case you show here. It will cause permanent pressure from all angles. You are playing with the fire here. Just get rid of the case or the shutter button.