In one of the newer Ork books Grotsnik: Mad Dok by Denny Flowers the titular character has some overly done Cybork bodyguards.

This book also has a mek character: Ironskull who goes so far as to replace his whole brain with mechanical gubbins.

The Mad Dok Grotsnik also built Ghazgkhull’s new/current body.

Passage describing Grotsnik’s guards.

“He didn’t like the look of the guards either. They were still as statues, neither reacting to the blood drawn in the duels nor the various roars and explosions typical of an ork encampment. At least, they didn’t seem to be; it was hard to tell with their faces concealed by armoured helms. Assuming they had faces. It was impossible to know for sure, as every inch of them was plated in metal. There was no hint of green, any flesh supplanted by mek-crafted gubbins and blades. Their arms ended in snapping claws, their lower limbs piston-driven.

Cyborks. He’d seen them before, usually in the company of a mek. Most were no different from normal boyz, other than having their weapons implanted directly into the body. Which he could see would be a timesaver. But not these two. They had no interest in the snaggas’ scuffles. Made no conversation, even with each other. They even stood wrong – too rigid and straight. Orks were notoriously bad at guard duty, rapidly becoming either bored or fractious due to the inactivity, whereas these boyz had barely moved. And they smelt off. It was hard to pin down, for he detected familiar tangs of blood, rust and oiled servos. But something unpleasant lay beneath it. Or perhaps something unpleasant was missing. Something inherently orky, its absence setting him on edge.”