Explorer or torisebzr update to specific revision

I've been using Subversion and git for a while, and now at work, I've been tasked with setting up a repository- and have decided to go with Bazaar. The folks here like to use the GUIs, and not command-line tools.

There's one useful bit from Subversion's explorer shell extensions that I can't find in Bazaar's, "Update to revision..." - once in a while it's good to have an easy way to rewind a tree to an earlier version. But Bazaar doesn't seem to have any way to pass a "-r" or "--revision" flag to its update & revert commands from its Explore GUI or Tortoise extension (other than digging into a dialog that makes you type in all the files you may want to revert/update). Is it there and I'm just not seeing it? Or is this a command-line-only option?