The .40S&W cartridge wouldn't even slide up the breechface as it would be too wide for the 9mm slide. The barrel would be too wide on both ends. The slide would be too light for the .40S&W caliber as well.
Think they did when they first came out but stopped importing the cause the US market didn't really care for the paddle magazine release. I shoot USPSA, Steel Challenge and IDPA and prefer it over the button. To each their own I guess.