Hi David
The uTasker is a complete frame work for TWR-K20D72M with KDS (with support files, K20 simulator, USB stack, dynamic low power support, interrupt and DMA drivers etc.). The page has some binaries built with it so that people can quickly test something but there is a link to the complete source there too. There is a porting video (for CW and KDS) and a complete KDS based TWR-K20D72M project can be up and running within 10 minutes when followed correctly.
To port IAR examples to KDS means exchanging the startup files and adapting some details - adding the files etc. is simple because KDS will include all that it finds in the project directory. I have done it many times for many compilers and could do it in an emergency in case you need the example urgently for commercial work. The IAR examples are however usually quite simple demonstrations and so are rarely of much use for more that first steps.
Regards
Mark
Kinetis: µTasker Kinetis support
K20: µTasker Kinetis TWR-K20D72M support / µTasker Kinetis FRDM-K20D50M support / http://www.utasker.com/kinetis/TWR-K20D50M.html
For the complete "out-of-the-box" Kinetis experience and faster time to market