ORSI (see link over to the right) is Oklahoma's repeater coordinator. They haven't seen fit to become a spectrum manager like many other coordinators. TASMA, the group that coordinates the 2-m band in Southern California, sure has though. Look at their bandplan: http://www.tasma.org/bandplan.pdf.
There is no need to worry about where you can set your dual-band rig to be a cross-band repeater or where to put your IRLP node - it's all laid out beforehand to prevent interference (though surely there is still some).