I found working with the os x screen sharing is to sluggish.
So I reconnect my monitor on my VE Slave. But I can't deal with 2 keyboards and 2 mouses.
But I found another solution.
If you're on Mac with a Mac slave, you can switch from one to the other with the same mouse and keyboard just like it whas one single computer.
And it's free (donation-ware). Check it out:
http://www.abyssoft.com/software/teleport/
It's simple and working great. I don't feel any video latency.
Maybe there's a PC equivalent. But unfortunatly I don't think a cross plateform solution exist yet.
(I'm in no way associated with the developper BTW)