Metrowerks has released a version of the Code Warrier development kit (http://www.metrowerks.com/MW/Develop/Wireless/Symbian/Nokia3650WDK.htm) for Series 60 Phones. The kit costs $1,150 and includes a Nokia 3650. This is almost identical to their P800 developer kit (http://www.metrowerks.com/MW/Develop/Wireless/Symbian/SymbianWDK.htm) deal.

What I'm not clear on is wheather you have to pay the full wack twice, once for UIQ and again for Series 60?

This is weird! I don't understand how this could work. It's a known fact that you cannot use Visual C++ with SE P800 UIQ SDK then how should it work vice versa? Because the class libraries in Series 60 SDK are compiled with Visual C++ then how can you compile and make your application work with CodeWarrior C++ compiler?

Because the class libraries in Series 60 SDK are compiled with Visual C++ then how can you compile and make your application work with CodeWarrior C++ compiler?

That's because the kit include the Series 60 SDK built with CodeWarrior.
Series 60 SDK from Forum Nokia can be used only with M$ IDEs and not with CodeWarrior.