The difference between homebase and "on the road" is that at the homebase your rest time starts leaving the airport whereas "on the road" it starts when you reach the hotel. Homebase rest time is 10 hours plus 2 hours travel time which in many cases is actually less than what you might get "on the road", depending how far you live from the airport and how the traffic situation is.
And by the way, subpart q is in many countries amended by national regulations so it is just the smallest number of identical items, there are many many differences between eu nations in regards to FTL still.