This is the talk from Noosapalooza 2015 where Philip McGregor discusses his use of a fundamental overlay with the Growth Portfolio and also another 100-day breakout system.
I find this very interesting. If anyone has ever experimented with this for US stocks please let me know. Just looking around for data to consider this for US stocks, nothing (inexpensive) is jumping out at me. If anyone has suggestions for reliable fundamental data for the US please let me know.