I only meant it wouldn't work in that it could not scrape the information automatically.
If you were to use Media Companion to scan the folder(s) containg the ISO's it would then probably fail to find a match on IMDB and would create blank nfo's for you.
You would be able to edit these within Media Companion with custom information that related to the concert and even put a link to cover art for the DVD (Local or Internet), you could then scan these to XBMC the same as everything else.