Sadly, I suffer from a bit of ocpd, so I clean the screen constantly. I do have a belkin matte finish screen protector and that helps. I keep a screen cloth in my desk at work, in my car console, in my desk caddy at home, and in my backpack....yeah, I know...when it comes to some things I border on ridiculous.
I am getting used to the touch screen. I was already using a touch, but seldom had to compose e-mails on it. I'm still missing the feel of the BB keyboard, but I'm getting there. I'm thinking about picking up a stylus. I tried one out on my touch a while back, and it does seem to work rather well for lengthy e-mail messages.