Soft-modding Geforce into a quadro still possible?

I am building a workstation to run architectural software (http://www.tomshardware.com/forum/276318-31-architect-b...) and was planning on getting a geforce graphics card, and then soft-modding it to use quadro drivers... But in my research I found this article: http://www.tomshardware.com/reviews/quadro-fx-4800,2258...
I also read a few off-hand comments in old posts about how soft-modding doesn't work.

So my question is simply, has NVidia found a way to stop this, or is it still a viable option to just buy a GTX280 and flash it to perform like a Quadro?