Clamps and Knots
From the other thread, I think my clamp bases are the same as yours, just mine are color matched to the rest of the stringer. My drop weight tower looks significantly different from yours though.
I just use a knot to start my crosses. I have done it for years. Ironically, what happens for me is the grommet gets flanged like that special tool would do for you. I find the grommet typically wears out in other areas first (mainly due to inadvertent contact with the tennis court) before the wear at the knot becomes an issue.