Of all companies to concentrate on ergonomics, why a manufacturer from the Czech Republic? What possessed them to focus so hard on a fairly obscure design feature?
Unlike other Warsaw Pact countries, the Czechs had a rather long history of innovative, interesting, and well made firearms design and many Czech designs have long been popular throughout the world including the CZ-27 pistol, ZB-26 light machine gun, and Vz-24 Mauser rifle. Also, unlike many of the communist "comrades" the Czechs were fairly well known for bucking the Soviets when it came to small arms. The Czechs never adopted any of the common Soviet small arms like the Mosin-Nagant, SKS, AK-47, TT-33 Tokarev, or Makarov PM but rather chose to use their own indigenous designs such as the Vz-52 rifle and pistol, Vz-58 Assault Rifle, Vz-61 Skorpion submachine gun, and CZ-82 pistol. Finally, the CZ-75 was designed from the start for export sales so it is unsurprising that the Czechs would borrow popular features from other successful pistols including the 1911, GP-35 Hi-Power, Sig P210, and Walther P38.