Was wondering what method Chiefers are using.
EDIT: Do you find a specific advantage to one method over the other?
I've used both and am using the plan foot print CAD detail method currently but never found a real down side to using Layer/Ann Sets other than a dimension conflict when needing decimal dims for the site plan and fractional dims for the floor plan..
The only real upside I can find with the plan footprint is that 2 different dimension formats can be used. Decimal feet in the plan footprint CAD detail for complex site plans that need survey information, and fractional inches in the floor plan. When using floor plans Layer Sets Ref Sets etc. there is only one dimension format available.
Both methods have a 'live' footprint but Anno/Layer Sets seems much more flexible but can't access 2 dimension formats if needed.