Honeycomb tablets aren't saddled with just one style of keyboard; you can install new ones easily. Some keyboards are better suited for texting, whereas others are superior for longer-form writing like e-mail. Here's how to quickly flip between keyboards on your Samsung Galaxy Tab 10.1, or other Honeycomb tablet:
Step 2: Make sure the keyboard is enabled on your device. Some keyboards will walk you through a setup to make sure the app is enabled, but if one doesn't, you can easily check on this yourself after the next few steps.
Step 3: Open an app you want to type in. Press on the text entry area, and you will see a small keyboard icon appear near the bottom right corner.
Step 4: Touch the keyboard icon, and select the keyboard you'd like to use. If the one you're looking for doesn't appear, you will need to press "Configure input methods."
(Optional) Step 5: Look for your preferred keyboard choice in the list, and make sure the box across from the name is checked. Press the back button in the lower left corner and repeat Steps 3 and 4.
You should now be able to switch between any keyboards you have installed relatively quickly.