Awesome plugin, thanks heaps! Once I got past an initial problem of wp-snapshots directory not found (with very quick support from the developer), I had a dev and test site up and running in minutes, on a completely different host, and without having access to CPanel on my production site. If you've got W3Cache or similar installed you might have to muck around a bit - I found the easiest way was to simply delete the cache plugin before creating the package and then reinstall it afterwards.
This is my favourite new plugin! Thanks again.