Progress! Using the "Day Scene" apk from
this thread, I was able to install, set it as a wallpaper (white), then reboot to a working live wallpaper. Not sure how long it will work though, as the wallpaper changes during the day, and might go white during a change. Widget in link works too (somewhat), it resizes and displays the appropriate weather and location but does not save settings when changed.
As for the "My Water" wallpaper, I used the apk from
here (not working).
Update: Changed the system time to force the Day Scene wallpaper to change... and it slowly faded to white. Disappointing, but the wallpaper still works when set to not change.