Hey Claude.
I spent all of yesterday trying to get this on my iPad, and eventually came to the decision at I would have to create my own backgrounds, and tweak the themes size and positioning to look as good on the iPad as it does on the iPhone.
It took me a while to find a position that looked good in both landscape and portrait configurations, but it think I've got it down now.
I've also created 0-23 backgrounds at 1024*1024 for the ipads screen and to support it's rotation, however as I didn't have access to the original rotating backgrounds , they are not a direct match to the iPhone version, however I've created iPhone sized backgrounds too for anyone who wants both their devices to follow the same colours and look.
With your permission Claude I will upload the modified slantedlockipad.theme and the new bg24hr for iPhone on this forum.
Here are screenshots of the ipad.
And here is the iPhone
obviously the different backgrounds are all the same as the ipad ones, but at this size :