[farshizzo]

Yes, you can use the viz.MainWindow.stereo command to change the stereo mode at runtime. Here is a sample script that toggle quad buffer stereo using the spacebar:

import viz
import vizact
viz.go(viz.QUAD_BUFFER)

viz.add('gallery.osgb')

def ToggleStereo():
	if viz.MainWindow.getStereo() & viz.QUAD_BUFFER:
		viz.MainWindow.stereo(0)
	else:
		viz.MainWindow.stereo(viz.QUAD_BUFFER)

vizact.onkeydown(' ',ToggleStereo)