If I were in your place (and in the near future I will also make a few YouTube movies using CS) and using my own license, I would not worry too much.
I guess that as long you are not pretending to be from Element14 or from Altium everything will be OK. I don't see them making trouble, after all you are "spreading the word" about CS and that's essential for them, they may even pay you to do it
Hi Mike, I would say go for it! If you are using CS then perhaps we can look to get a link from here to your video once you've posted it.
I've made the incredibly idiotic decision to begin a Youtube channel in which I will take the viewer completely through the design of a guitar effect from start to finish.
Once I've purchased the software ( CS - I'm still using the trial version), can I use it in my videos as my schematic/capture tool without having to get permission or such for it to be in the videos?
To be clear, I will not be saying or teaching CS, i.e. "Here's how to use CS to do this...", but instead "These are my techniques and style for how I do things, I just happen to be using this tool".