Overall pretty good, I did have an issue however when part of a CSS file began leaking olive oil from the featured page on my website. A customer complained it clogged up his keyboard pretty badly. I tracked it down to What? Nothing! So, after a quick phone call to the company (thanks for that Kate, and for the other thing too :)) I was quickly sent a beta copy of 9.1.1 which stopped the leak. This was the only issue which stopped me giving this extension the full 5 stars, otherwise it's perfect!
Thanks for the review. Indeed, the 9.1.1 version (still in development at this time) should solve most to all emergencies.