Don,
I have created the layout-managed-subsite and converted the 'Main' subsite. I have installed the includelets and have run through the wizard.
As admin I now have all my admin links shown as beautifully 3D shaded tabs. One observation is that by default the 'active' tab is blank until I click the tab link. Then it populates. Presumably there is a way to specify a default tab to be populated on arrival.
If I go to the site root at '/' I have a simple blank page. So I guess I have another stage of configuration to do.
I read all the documentation before I started. It is clear and concise, however I wasn't helped by the fact that I read the docs for both Layout-Managed-Subsites AND Layout-Subsite-Integration, and as a result was left a little confused as to their respective functions. I was left floundering in the terminology!
I will review the docs again knowing what I now know and will report back on progress (or lack of it!).
Thanks for all your help, and for a great development.
Richard