I'll just have to wait and see what goes with the GTX 770 or 760Ti. I'm not willing to do such a mod on the FT03 Mini considering the drawbacks (I'd still like to see exactly how Maingear has their case modded by Silverstone to fit in a Titan). I'm kind of stubborn regarding my choice with the FT03 it has everything I want. Oh well...
I contacted Maingear about that a while back. I posted their response a few pages ago. They just cut a hole and give you the case without a dust filter. You could probably get just a filter and stick it on the fan itself. You should make sure to separate the filter from the fan blades a little so as to not kill the performance completely...