Yeah. That's more or less the problem. Most teachers don't use them any more than as glorified blackboard/video projector hybrids. There's very little training available. The schools that are trying to make better use of them set up "user groups", where the teachers who have a bit more ability with them are expected to pass on their skills and knowledge to their colleagues (and be, more or less, completely ignored).
I'm pretty much at the top of the game regarding the use of the standard software, but, as I've got better with it, the clunkiness has really started to grate on my nerves. I know that the things cost a few thousand each, and I want to be able to use them to their full potential.