I can't get this to work. I use Chomp, but I love the stock HTC messaging widget. It's really clean and takes up the full page to display many threads. I uninstalled Chomp, and went to my app settings to clear all data from the stock messaging app. Then I reinstalled Chomp. I put the stock messaging widget back on one of my homescreens, and clicked on one of the conversation threads hoping to see "Which app would you like to open this with?" but it automatically opened the HTC messaging app.