I have seen the two finger arm grips in kungfu styles but I have never seen how they are stronger than gripping with all fingers/thumb, although the principle is the same. Interesting idea about the palm followed by the poke to something soft-I am open to that as an extrapolation.

I agree I think with the forearm movements, seeing them as a sliding (as kata) choke/jacket grip perhaps pulling into a knee strike with arms apart (double gedan bari) as securing a neck and an arm, which I think is something like you were suggesting but I have seen other applications for this.

I am about to go away for a month and I don't have a camcorder (and I am not sure about putting myself in film on the net anyway) so I will not be filming myself anytime soon but I am happy to descibe in better detail what I have in mind if it is not clear.