More on Stylus, iPad, and Sketchbook Pro

So, has anyone else used the iPad for making art? I am, and I'm having a great time.

I've been using Autodesk Sketchbook Pro for my iPad, and it's really great. A lot like Photoshop, with layers, brushes, smear, plus you can do mirror drawing where it reverses everything you draw onto the opposite side of the canvas. This is really great for making front facing faces with ease.
The only features I am really wanting to see are layer masks and magic wand. Yesterday, when I was coloring an illustration, I had to color all my flats, then go back with an eraser to keep everything within the lines. A little bit of a pain, but it's really easy to clean up with a precise stylus and a lot of zooming in and out.
I am also using an iFaraday stylus, the tip is very soft so you can glide the stylus across the screen without sudden stops like many rubber tipped styli. I just saw that iFaraday now has an artist pack of styli that have different shaped tips. I might buy this in the future. From a review I saw on Youtube, the iFaraday stylus is much more precise than the Pogo stylus.

I've also tried Adobe Ideas. It's very cool because it turns all your marks into smooth vector strokes. Unfortunately, Adobe wants you to pay $4.99 for multiple layers on your project. No thanks!

I've also heard of Brushes, which is supposed to be really great, but I haven't bought the app yet.

At the college, I printed off some of the Sketchbook Pro manual for reference. This is really great, because most of my knowledge was learned via a short Youtube tutorial. I highly recommend checking out the manual, there are so many things I'm learning in it that I didn't quite know how to use.

Currently, I wish Autodesk Sketchbook Pro had two features: magic wand and layer masks. I would like to isolate a selection, then color within that, but without a magic wand or layer mask, that makes it a bit of work.

I'm still uncomfortable "sketching" on the iPad. I'm unsure why, maybe I just like the feel of pencils and pens in my hand. Maybe it's something I just have to train myself with. I'd like to draw right on it, then color like this guy on Youtube. For my last project, the Ultron:

This was originally a hand drawn illustration that I penciled, inked, then scanned onto my computer. From there I imported it into Sketchbook Pro and started coloring.