As per Jez's response......Well worth it in my opinion also and make some difference in support, I am not small by any means so hold me well, but my wife is on the much smaller side and she feels the alcantara prevents her sliding about under hard cornering over the leather oem. As for comfort, I have no issues, yes they are firmer but then they are more of a sports seat over the oem leather item, where you gain in one area you lose in another, but saying that, long drives, no problems on the booty, back or legs. As for height, in the lower setting which I have mine secured, they are at the same height as the non electrical item which is lower than your full electric seats. They do have much more of a bucket seat feel to them so the front of the seat is higher which slopes back.
Fitting took I hrs with no issues at all, I do believe there is a little more work when replacing full electric seats.
Just do it!
