Here here, I'm looking at Real VNC enterprise to start getting some secure easy to use client options in place, since i have a couple users who like to work from home.
The problem is no OSX clients exist that support the Enterprise editions security encryptions.
If we could get some ssh tunneling built into a client I could do it securely that way.
I agree this would be a handy feature, but in the meantime, I'm pretty happy with SSH Agent combined with VNC. Since SSH Agent lets you save tunnels, reconnecting to a regular host is only a click or two away.
Slightly less annoying than doing tunnels manually:
Get the 2.0 beta. Much improved interface. Use it for VNC all the time.