Native development on a Mac vs Dragonfire SDK on Windows - iPhone Development

I'm wondering what are the main differences between developing for iPhone on a Mac, using the official tools/IDE (Whatever they may be) on a Mac, vs using the Dragonfire SDK on a Windows machine?

Is there a lot more hassle involved going down the Dragonfire route?

My main concern here is cost, I don't own a Mac, and don't really need a new machine right now. So the Dragonfire SDK looks like a cheap alternative to be able to develop right on my Windows machine.

Are there any pitfalls to using the DF SDK, does it present any problems, and will it be easy to transitioning to developing on a Mac in the future if I wanted to?

Also, as the case may be, does the Dragonfire SDK simplify any of the process, as well as being the cheaper option?

EDIT: I forgot to mention, I do NOT intend to develop any games, is Dragonfire SDK suitable for non-game development? Or is it too limited to much outside of games.

As I understand you write the code in C++ for example, then it calls the native Objective-C functions when they build it through their Build Centre feature.

Dragonfire offers an API's using C/C++ , while developping on Mac you'll use Objective-C

To create your executable with DF SDK you have to hand your source code to them so they can build your application on their servers, while for Mac you hand them only your final executable (they provide you all the tools to make your app in your own machine)