"New" razor with o-rings,pics of new scuttle with Semogue LE #82
You bought the handle and can do with it as you wish, but the O-rings aren't needed to prevent the handle from being slippery.
I copied this handle from the Goodfella design which I felt was too short, too skinny and the grooves didn't go far enough down the handle.
I find the cut grooves provide a very good surface.
This handle is my 2nd best seller behind the BM, every time I make one for myself I get an order and end up selling it.
FWIW I do think it looks better without the rings.