Just wanted to say "woo-hoo" for this one:
"The Tile Clones dialog now uses the object's defined rotation axis
(which can be freely moved by Selector tool and which is saved
separately for each object) for all rotations (including both symmetry
rotations and the Rotation tab rotations), scales, and flips. This
renders unnecessary the previous workarounds where you had to group an
object with another transparent object to affect how it's rotated by
the clone tiler."
from the .46 draft release notes.