Actually it's really not that stupid. It might not be for everyone, but it certainly has some potential uses. I wouldn't expect to see many other boards like it.
Well....it's not a bad concept, but I believe trying to add both hinders actual performance somewhere down the line. It's definitely not bad for those who want a PCI-E board to try and progress but don't have money to get the graphics card right away.
well in some cases you have to buy a whole other PSU to power those graphics cards. It'd be good for those that want to get the mobo only and wait to splurge on the graphics card and PSU at the same time