Mark I dont actually think the weight difference is that noticable when riding, only picking it up, which isnt really the point.
The orignal forks have slowed the steering a little over the carbons but not significantly and do feel just right.
The only issue I have is the aesthetics, the steelies look great from the side but the distance from the top of the tyre to the crown of the fork looks huge. Other than that the steelies have it for me and will probably stay on