This depends on the kit, quality, and type of car. Some kits are too loose, allowing more movement to swing out. The butterfly look.Originally Posted by transio
If it is done well the doors can be opened completely, straight up, with zero obstruction. This would be especially better in todays small parking spaces were you have no room to open the door.
Also it is not rice it is German and Itailan. I generally think that long thin doors look better vertical, ie Lamborghini Countach, than square but it still look good if done right.