Thanks for the reply Fontmoss
potentially the difference in rake will offset (sic) the difference.
This is what I hoped!
I found this article on introduction of the New Niner Carbon fork compared to the old steel fork which had an A-C of 480mm.
There was a level of compliancy that is only possible with carbon fiber. Steering precision was spot on. Which leads me to a couple of things about this fork that are different than my steel one. The steel fork was built on a platform with a 480mm axle to crown, and an offset of 38mm. The carbon is 470mm A-C, and 46mm offset.
The resulting change in both A-C and offset, results in an increase in steering speed, but not at the expense of being twitchy. I was very impressed. Negotiating some of the tighter turns on the loops became a lot easier. “Right NOW!” low speed turns on rooty switchbacks were a lot less nerve wracking, and there was no sign of impending tip-over.
I hope this is the case with the On-One fork on the Swift because I will use it for racing and don't mind a bit of twitchiness