Keep in mind the larger phones really aren't designed for one handed use. So you will probably be somewhat disappoint with trying to do so.Two things im looking forward to a lot:
1) To not have to deal with the bad performance of the iPhone 6 I'm currently using.
2) A different form factor of iPhone than one of the two that I've been using since 2012.
I am a little nervous about a couple things too:
1) Physical larger size of the Xr, I'm worried I may drop it while using it with one hand
2) It will be the most expensive iPhone I've ever purchased.