Well, I installed it and successfully printed. Nifty little app, but I'm kinda put off by the pricing. After your free 20 page trial, it is $4.95 per 100 pages, or you buy the premium version for $9.95 per month.
I don't mind paying for an app but I hate ongoing fees with a passion.
I'm hopeful that other options for printing from Android will appear once all the Android tablets hit the market. There is going to be a large demand for this.