>>4430608
There are clip in/magnetic filters for certain cameras that give you the versatility of full spectrum without the misery of screw in filters. But the same DSLR vs mirrorless tradeoff applies since it goes in front of the mirror box.
If you're set on a permanent conversion, download the sample RAWs from lifepixel and play around with them. That should give you an idea of what's involved on the processing side.