I have to admit, I'd be pretty tickled to get to hunt hogs on the land where I hunt but I know that they'll never move into the rocky Ozark hills of Eastern Oklahoma. I damn sure wouldn't release any for the purpose of hunting...
Not sure where you are talking about particularly, but it is only a matter of time. Cross the border east and they are in 50-55 of the 70 counties in Arkansas, which are rocky Ozark hills. (http://www.arkansas.gov/abof/pdfs/ABRF_hogs_jrushing.pdf) They are all over the rocky hills in SE Oklahoma and can live in just about any habitat.