I would also like to know how to remove the Swype that comes installed in Rubix so that I can install the beta installer.
This is how I uninstall Swype on my X. Not all of those might need to be removed, but I like to clear out everything before installing the beta.
Remove the following files:
Basically I did a search for "swype" and wiped everything.
Make sure to reboot after uninstall and before installing another version.