We know it's similar to ARKit and therefore awesome, but for the moment it is too limited to just a few devices and sadly we don't have a phone to test it on.
Having seen Leap Motion in action I think it will run nicely side by side. You can also remove the need for a tracking engine and just do all the object manipulation with your hands. Just make sure the transformation towards the camera's in the ARCamera prefab is correct. (You can't just randomly place the Leap Motion device anywhere.)
We are working on this ability in a new app. With the app it will be really easy to view your own models. If you can't wait, I assure you that you will be able to create your own app to show your model without having to do any programming. Unity does a lot of the hard work for you. It's almost as simple as: download and install Unity, download and import the Aryzon sdk, open the Vuforia sample scene -> drag in your model, build and run to your phone. If you want to give it a a go and run into issues I will help you out.