This probably hasn't been touched upon by anyone cause few people have had the chance to drive an SVTF both with and without euro rims. I have and I can tell you there is a DEFINITE difference in the feel. I can't say it is all good either.
The GOOD though is that they seem to feel out and hug the road even better. Every drop or slight change in the road surface and the wheels are right there in them. This probably means they are heavier because I have noticed a LOT less (read no) wheel hop.
The BAD is you can feel a LOT more of the road through the steering wheel. To the point that it is almost unnerving. At first I thought there was something really wrong with the tires, like the car wasn't under control. Once I adjusted to it the feel wasn't so bad...you just have to accept that you are feeling a lot more of the road.
Oh and yes, euro wheels are about 10x harder to clean than 5 spokers....
Just as a side note my euro shows a shipping weight of 2499 lbs. I forget what my old one was.