Had a bit of a play around this morning and connected my dish to the tv as it's got a built in sat tuner.
I tuned in the same sats that I have on the viark, and voila. Now I can get a full epg at the touch of a button (using the tv remote), whilst using the viark.
Once I've finally sorted my channel list out on the viark, I'll do the same on the tv so that they both match up.
It's worth trying it out if your tv can do it, and you're not using the freeview tuner on it.
@Kurdt Kobain has a similar setup, where he's routed his viark through his gigablue box, which is where I got the inspiration from.