I didnt buy this case because I work on a building site, but because I tend to drop things generally. Plus, I like a case that looks rugged and not girly, which this is.
My only concern when I was buying the case was if it was too big; say, if I am wearing a suit. However, the inner case is very small and can be used on its own and looks good by itself. Bonus!
Not planning on using the holster, but it is useful if you are watching a video or making a skype call with video, as it doubles as a stand.
Generally a good looking, hard wearing case, which has flexible uses because it is two cases in one. This version also comes with a screen protector.