Please let me know if build 273 works better on Apple Watch. Note that the new "Slide to Type" feature is not very usable yet for VoiceOver users, so you might want to turn it off from the FlickType app on your iPhone.
Also note that you can now dismiss the keyboard with a flick down to preview and send your text. As a reminder, to change suggestions on the watch you can use the Digital Crown.
If anyone is experiencing any crashes, please let me know.