FFP scopes lose a lot of their reticle utility at the lower mag. powers and an advantage using the SFP is using the turrets at the lower mag. range.
Not really. The beauty of FFP is that it can act like a simple duplex reticle on low magnification, and provide more detailed subtension information at higher magnification.
Using the turrets is not an SFP advantage, as turrets can be used at any magnification, regardless of the focal plane on which the reticle is placed.