FfF, It is now an integral part of our 'awareness day' package
Having flown around a fair few of our PCSO's, it certainly gives them a better idea of their patch and how best to utilise us, as it does with any other Officer. In particular, having seen how much we can see, helps them describe what they want us to look at more effectively.
Chances are that they will rarely speak to us themselves, as usually there will be someone else coordinating, but gives them the confidence to call us up should they need to.
In fact, I think that next week I have a PCSO visiting on a famil flight.