Well, it's not likely that anyone would gain 10% just with wheels and tyres, so it's not likely that I'd lose it either.
Anyway, more changes to come will be thinner tyres (to return to 185 width) and taller instead (60).
Also, the tyres were generic crap-o-tyres before, and crap-o-tyres now, so LRR tyres are on the wishlist!
I agree however that these wheels are heavier, and less aerodynamic. I prefer the look of these though, so I'm willing to compromise