IMHO, keris grip should be held in the most natural way, whereby the blade should be parallel to the ground and the hilt is angled about 45 degree from the gandik. You dont have to use a lot of force to penetrate your opponents abdomen or neck, but rather the palm will do the job with very less effort. Other ways could be deemed taboo in the regarded palace silat, but of course kampung folks would have other ideas. Though probably as effective, it is still considered wrong in palace ethics. I am speaking from the Malay palace point of views BTW
