In and earlier comment I said that this product "doesn't work". That was certainly true of the version I had then, but the product seems to have been fixed. Intego have now provided 10.3.8, and I've created three separate clones from scratch, and updated one I made earlier. All of them booted OK, and as far as I can tell all the data, settings, preferences, permissions, etc were fine.

I was sent this version after informing Intego of some problems, and they've been responsive and communicative in fixing the product, and in telling me about updates. A pat on the back for Intego!!