Mike, you and I are just too 'old school' for all these new fangled gizmos.... That's why I hesitate to try and train anyone on power tools, because I know things have changed so much and I'm too set in my ways.
The first saw I ever used with a riving knife was the De Walt Contractor's table saw. With the rack & pinion blade height adjustment, the riving knife follows the top of the blade in a parallel fashion instead of an arc like a traditional trunnion and is very easy to adapt to. It is also easy to remove when necessary.