That one, the Roth-Steyr pistols, Bergmans, they all have that funky "we're not sure what an auto should look like" appearance.
Handguns were more interesting "back in the day," before Browning and Walther showed the most efficient ways to make them.
The exposed barrel ethic that even Walther liked had an elegance to it, and some very fine pistols were built to the standard such as the Nambu (all three varieties), the Lahti, of course the Parabellum and even P38, as well as the boxy Webley and the Glisenti/Brixia.
Ruger knew what he was doing when he chose that aesthetic in a pistol (even though the Ruger autos look more Nambu/Lahti/Glensti than Luger).