AFAIK nothing has changed. These cases are not designed for frequent removal/installation. To be clear they can handle quite a few changes, but if you're doing this regularly and frequently you likely will have troubles eventually.
Looking to pick up a Lifeproof case for an upcoming vacation. I recall in the past (and why I did not buy one) was that you could only remove the phone X amount of times before the lifeproof case is useless.
Is that still the case with the iphone 6 version? I want to use the lifeproof during the day to take photos in the water and such, and remove it at night so my phone will slip into my pocket easier.