I have been running developer builds of Mavericks for several months and have been very happy with it. I am excited for the general availability of Mavericks.
I have found a cosmetic bug in CloudPull that is only seen when running under Mavericks. This bug involves the display of a progress bar. I will address that bug with an update through this web site no later than Thursday, and through the Mac App Store as soon as possible thereafter. In the meantime, that bug is a minor issue that need not hold you back from upgrading to Mavericks.
Update October 23, 2013: The CloudPull 2.5.2 update addresses the Mavericks-specific bug.