Huge, potentially razor thin (unless apple wise-up~) glass slabs in pockets.
How soon is some poor sod going to have to limp up to casualty with something i-shiney lodged in their trouserial region*.
* Also a risk for the (potential) skirt wearing members of the public too, but man-bags are still not popular enough to save lives by being less embarassing than the risk.
Basically, hint, hint to phone manufacturers. Something folding/clamshell/brick please, we're all bored of slabs. It's getting like a glassified version of the Flinstones...