The Xactimate appears to be more of a corporate application, meaning that no exact information is provided to users regarding the trial version. I've searched through the website to find the exact limitations for the trial version, but it appears there is nothing available.
For an official response, I strongly recommend getting in touch with their support team. Since they're focused only their apps, they should provide an exact answer regarding the features and possibilities available in the trial version of Xactimate.