I have been using a little program called TouchlockPro 2. Its free and takes up very little resources. I liked it because it would lock the phone when in a pouch by using the light sensors on the Touch Pro automaticaly. When you take the phone out of the pouch it unlocks. If its too dark in the room you can even pull the stylus to unlock. You can check it out here
http://forum.xda-developers.com/showthread.php?t=444215