Final Embrace feat line

[Talonhawke]

Really like this line of feats but i was wondering is there any mechanical benifit for ability focus (constrict)? I would think there isn't as the base constrict doesn't have a DC.

[ColonelMidas]

Talonhawke wrote:

I would think there isn't as the base constrict doesn't have a DC.

I've always thought of it as the DC to escape the grapple, either the CMB check or the Escape Artist check.

[jwtelesio]

http://paizo.com/paizo/faq/v5748nruor1g1#v5748eaic9qm1

There is no DC to Constrict because it is activated on a successful grapple check. Ability Focus (Constrict) can be ignored.