I do, and it's purely because all the Mercs I've had, had the function and I asked about it on the test drive
Those who are unaware, when you press the brake, at a certain point when the vehicle is stopped, pressing the brake pedal again will give you a HOLD at which point you can release the brake entirely with the brakes on fully. which is very useful as no parking brake required and makes hill starts a doddle as it will automatically release when the accelerator is pressed