Text Entry with SHARK

Text Entry Epiphany for the Tablet PC- SHARK: "There is no question in my mind that SHARK is the best on-screen text entry system I have ever used. This method is so simple and accurate it amazes me every time I use it. It is a must try for every user of a Tablet PC or other touchscreen enabled computer."—jkOnTheRun

Since I ordered my tablet without any kind of keyboard whatsoever, I'm particularly interested in this. If I can get away with not carrying a keyboard around with me, I'll be very happy. My only concern is how the JVM will affect battery life and system performance. I'll post a review of my own once I've had a chance to try it out.