blackcat, I think the grip etc is all going to be very child-dependent. My kids tried several grips, but for my non-dysgraphic kids, their preference has always been mechanical pencils, and that really did help my older dd use a proper grip. My dysgraphic ds liked the short tripod-shaped pencils and pens, but what worked best was simply moving him to keyboarding. He did develop an almost "normal" pencil grip when he worked with his OT, and once he had the "normal" pencil grip he no longer liked using add-on grips or special-shaped pens/pencils etc.
polarbear