Well I had hydraulic steering wheel in my previous Ghibli MY2017 SQ4 also with all options, and now electrical in my MY2019 SQ4 gransport with all options too including the same type of ( Titano) wheels in 21"
And the ride it is much more smooth on the Hydraulic steering wheel, specially in bad roads, the car keeps straight and no efforts are needed,, with electrical steering wheel it follows all the irregularities of the road, it can surprise you quite a lot
What is good with electrical steering wheel, - it is compatible with all driving assistance, I use sometimes the Driving assistance plus, meaning the car really drive on his own, but due to regulations in the country only for 10 seconds or so and ask you tto put your hands on the tactile steering wheel, so what I do i settle a speed and press the comand for driving assistance on highway and I just touch very very slightly my knee on the steering wheel just to detect and I let it go on his own. ( this is not line assist that's something else)
Another point positive for the electrical steering wheel it is that takes less power from your engine as it use electricity and not a belt that is connected to the crankshaft of the engine, and less consumption too. ( Believe me nothing that is really noticeable)
the difference between with or without hydraulic steering wheel, in the engine bay you have an extra reservoir for hydraulic, not on electrical steering wheel
see here my previous 2017 and now the 2019 model