Grappling with a whip? And Chokehold?

[Hayato Ken]

If you got the Whip Mastery feat, you can grapple with the whip.
Now if you finesse the whip, how does that go?
CMB with DEX Bonus or STR Bonus?

And then there is the chokehold. It´s a feat normally.
Can you do this with a whip too?
Maybe using a whip like a garotte?

[Torgden]

I realize this question is several years old now, but I've been trying to figure out how chokehold might work with whip grapples as well.

I would say grapple with the whip works based on your normal grapple options, so you would use STR unless you also have agile maneuvers.

As for the Chokehold feat with Greater Whip Mastery, I would personally rule that they would have to be adjacent for you to use chokehold because there is no "Pin" option for GWM, but saying you can't wrap a whip around someone's neck seems illogical. In theory I could see combining the chokehold and "tie up" option (with the -10 total to the check) since at this point you're looking at 5 feats and a +8 BAB. My two cents.

If there are any official rulings on this, I would appreciate the link. Thanks!