Playing with "Paper"

I recently purchased the "Paper"app by 53 for the ipad. It is a sketching application that has limited options, which, paradoxically, makes it so easy to use that your creativity is allowed to flow. Since you cannot spend a lot of time making complex choices, you simply choose a drawing tool and color and begin. If you don't like a drawing, you simply put it in the trashcan. The basic app comes with one virtual drawing tool (a fountain pen), an eraser and seven colors.  I took my ipad with me to the hair salon today, and I used the basic set up to make the Gaudi-inspired heart above and this face:

It's kindof inexact and sketchy, but i like it.  I made both of these drawings using my finger, but I just ordered two styluses today (a drawing stylus and a brush stylus), which should give me more flexibility and control.  I am also going to purchase the paper creative bundle which will give me four more virtual sketching tools (a pencil, a bold marker, an ink pen and a brush), plus the ability to blend the colors to create a custom color palette.
I'm not that much of a digital artist, but I'm excited by the possibilities of "paper." It's a quick way to sketch when all I have is my ipad. 
I was inspired by Journal Girl who is doing 365 days of digital journaling, but there are lots of other videos (this is a good one) and blogs out there about "paper"  (for example, check out these 53 outstanding works of art made with  paper). Have any of you given it a try? What do you think?