However, there is no support. Posts in the forum are apparently reviewed by a moderator before being published but never get answered. For such a pricy extension this is a basic thing.
Documentation is okay but lacks basic instructions like a description on how to update to a new version (unfortunately it doesn't work with simply installing a newer version).
To make a long story short: Nice extension but not recommended if used heavily as support is only given on a now-and-then basis