The only thing I have noticed is a taste of chlorine from the tap. The filter on my fridge removes that taste/smell.
We had a regular (no dispense) fridge because of the size limitations in our kithen and the door going to the garage.
Sears had a smaller sized double door fridge with filtered water/ice disp. that we had them install in place of the regular fridge.
The door going to the garage was right next to the fridge and swung in and would hit the fridge everytime, so we had a carpenter remove the frame and door and change it so it now opens in to the garage and does not hit the fridge.