For me this is a big spend to make and before pushing the button I need to know from people with a similar bike (although your's is the higher model i think you can give me an idea what the lower spec model is like
I will definitely follow up with a bit of a review of the bike. I completely understand where you are coming from - budget-wise. It was the same for me - the Expedition looks good and the Voyage, from what I have read, also gets a lot of praise. The bike should be here by the weekend and I will likely get a chance to ride it on Sunday but not going too far, might just do 10-15 miles to start with, to get a feel for her!
Initially I was looking at the Genesis Tour de Fer - no doubt a very good looking bike but the lack of reviews available online and the fact it's retail price is £300 less than the RB Panorama at £899 (all of its components are under par with the Panorama's, but it comes with mechanical disk brakes).
The Cinelli also looks like a great bike but I'm not sure if you need to spend so much - perhaps the Spa bike is a good compromise from overspending by too much?
I am thinking of unsurfaced towpaths through to gravely tracks in the Lakes (e.g. the side of Windermere near High Wray down to ferry nab for example
This is no problem - I did it last year on my road bike with slicks!! OK, I did take it easy but still there is very little need for 26 inch wheels on such a surface unless you are absolutely powering through there, screaming at tourists to 'Get out the way!!'.
I only went all in on the Panorama because I am limited for time (I couldn't spend many more hours looking on the net), found one for a superb pricce. If you can wait then my advice is to do so. But if you have an 'itch' it really isn't long before it needs scratching!
Take it easy