It's probably no surprise to most of us that contact lenses are extremely useful to sportsmen and women who don't have 20/20 vision. A rugby player with glasses doesn't really make sense considering the heavy contact element of that sport - and indeed if you look at any sport which involves a moving ball of any kind we can see the benefit of contact lenses over glasses.
Disposable lenses are hygienically better and more convenient, so from that point of view daily disposable soft contact lenses could be considered the best option. This is because they are sterile single use lenses, individually packed, you handle them once to insert, once to remove and then discard them. The risk of contamination is extremely low with this modality.
Over the last decade, the aesthetic of design has become a major factor in the advancement of technology. An AR contact lens is an interesting and discreet development but people don't like to put things in their eyes, so for the future of AR it is better to focus on the development of a membrane as thin as a contact lens that can display digital information.