please consider adding a ~/.virsh/rc file which can, for example, hold a setting for the --uri parameter. I am aware that this can be pre-set via the environment, but it would be a better thing to not clutter up the environment with settings like that.
My personal $.02 is that this is a nice idea. You should also mention it on the libvirt list (email@example.com) to get a sense of what others think.
*** This bug has been marked as a duplicate of bug 538378 ***