Do I need adjustable end link with h&r REAR sway bar?

[AriuSen]

I see that everybody going coilover or front sway bar, uses adjustable endlink, but I couldnt find lot of information about the rear. For example, I have kw clubsport and it came with front end link, so I imagined even if the car is lowered, it wouldnt be necessary end links on the rear, but how about if I run coilover + rear sway bar?

Thanks