Yes, orthotics are shown to work as discussed in the webinar. There is level 1 evidence for neoprene insoles (shock absorbers) and semi-rigid custom orthotics (addresses over pronation or other biomechanics deficits).
So, when to use them? Insoles "couldn't hurt" to help with shock absorption and load management; however, orthotics are a better option if you have identified underlying biomechanical issues. As always, we need to emphasis that orthotics alone are likely not going to solve your patients injury, but should be used in a combination of load management, strengthening, the Solushin and other treatment modalities as required.