Diego
You need to read the uTasker licensing options: http://www.utasker.com/Licensing/License.html
There is an option for everyone; from free non-commercial use, through free (open source) commercial, through to professional email/telephone supported. This means that even commercial users who can't affort to or refuse to invest in any support still can use everything (including all ideas and tools) in their professional projects. Free support to free commerical users is even provided at this forum in the spirit of sharing.
It allows SD cards to be used on over 50 standard Kinetis HW, as well as building with GCC, KDS, CW, Rowley, IAR, Keil, Green Hills, Atollic, Coo Cox and Visual Studio (already 500 combinations with a single code) and is designed to avoid the usual "porting-pain" and IDE restrictions that are usually imposed by many examples. It allows accurate (approx.) real-time simulation of the processor itself (including peripherals, interrupts and DMA) and the SD card, which allows levels of development accuracy and efficiency that are unknown to most traditional "download/debug" type embedded developers.
Therefore there is really nothing that should frighten anyone away to doing things the hard way....;-)
Regards
Mark