Applying with a lip brush takes a bit more work and I think for the next time I might add some castor oil to soften things up a bit and make it easier to pick up color.
As for portability, I have a small palette from Glam Rx that came with in my Ipsy bags that is perfect for whatever color I want to take and a brush, and it has a mirror, so when I need to retouch it's not going to be too difficult.