Is the mitochondrial ATP synthesis solely H⁺-driven, K⁺,H⁺ symport-driven or K⁺/H⁺ antiport-driven?

Some recent literature experimental data indicate that the mitochondrial ATP synthesis might be not solely H⁺-driven, but K⁺,H⁺ symport-driven membrane potential-dependent, considered as a further development of Mitchell's chemiosmotic theory, in contrast to the anti-Mitchell's hypothesis of K⁺/H⁺ antiport-driven mechanism. In this short communication, the attention was pointed to a possible influence of the ionic strength of the used KCl incubation medium, versus of only K⁺ ions, and of the Mg²⁺-induced mitochondrial aggregation in the sucrose medium on the reported rates of the mitochondrial respiration and ATP synthesis. These observations were based on the own author's experimental works published earlier.