That's good stuff!
Another quick update: nothing has been recorded on the Saramonic since I posted here last - it's a very high-quality solution but a right PITA so I use it only when nothing else will work.
We have, however, continued using the SX40 and the Zoom Q2n regularly. The former still beats the latter into a cocked hat on pretty much everything, especially the video quality (as in, light and colour handling, not resolution), but the wide-angle function of the Q2n is very useful indeed for band+audience footage. I have found a way to sort-of-remedy the Q2n's dismal handling of low-light gigs, and especially of those using coloured lights, by converting the MOV files into MP4s and turning up the movie's brightness by at least 20% in the process.
The Q2n's performance in daylight is also different from the SX40's, again mostly from the point of view of the quality of the colours, which are less vivid and, in like-for-like comparisons, reveal a brownish hue. Of course we wouldn't notice any of this, or of the above, if we didn't have footage from another camera to compare it with.