Frog,
I have an EXXP (a sort of custom Catalyst/Raven cross) which was originally fitted with a Fox suspension fork as I intended to do lots of off road stuff.
It handles fine off road, but the suspension fork (even with lock-out) is a poor substitute for a rigid fork on road.
I've now swapped out the suspension fork for a Thorn rigid fork and it now handles much better on road and beter suits the cycling I actually do. Obviously it's not as comfortable on road...
A Raven with a suspension fork would meet your requirements, and would give you a rigid fork for on-road use (if you can be bothered to switch!) Stutho mentions the Catalyst; I'm sure it would be good too, although more off-road orientated. It all depends where your priorities lie.
You don't say where you'll be touring; on or off road? My reading of the brochure is that the 12Kg limit on the Catalyst is for off-road touring.
Check with Thorn, they'll always give good honest advice. I'm sure the other Raven Tour owners will be along to give you more specific advice.
I don't want to make this into and advert[:I], but I am considering selling my EXXP (with both forks). I'm confident it would meet all your requirements and more. Email me off-forum if you're interested.
Whatever Thorn bike you choose you'll be very happy and, as has been pointed out on this forum more than once(!), you have 100 days to change your mind (just don't trash the bike off road during that time[
])
Good luck,
Kevin