Do yourself a favor. Even if the Savvy sliders are on backorder, wait for them. I've installed several sliders and the design, coverage, weight, and strength is as good as it gets. Even if they're more money, it's a decision you won't regret later!
It sucks that we don't have a good slider option available (at least I can't find one I like).
Savvy is continuously unavailable, Genright mini-boatsides cost an inordinate amount with an inferior design, JCR costs more than Savvy and yet requires extensive modification.
One could try an alternative option, but the prospect of tub damage and later redrilling more holes for better sliders is dreadful.