It works an absolute dream.
Most my long haul travel is booked in advance, so 62K for every flight. With the family, we are all in rows 62-64. Fantastic.
As for F, no problems either.
On all my CE travel, I can get row 1 on every single booking (1C on the Airbus, 1D on the 767, 1J on the lh 767), including where I book at short notice. AY bookings also get me into row 1 (on AY and BA metal). With the family, we are all in AC seats.
Works a dream, and had taken away a lot of the uncertainties from before.