I bought one last August and it does exactly what it's supposed to.
I've added a bit of extra weight to the brake van, which stopped it occasionally riding up over the roller if it got slightly stuck.
Great product (usual disclaimer)
Eddie
Hi Shadow
Been following along, looks great.
I've got the same signal box kit, but I haven't got around to making it yet.
If you haven't found anything about colours, this may be of use.
http://www.stationcolours.info/index.php?p=1_4_LNER
Eddie
Picked up a copy of Railway Modeller yesterday, with enclosed 'Shows you how' Modelling Overhead Catenary.
Page 9 has a table of wire and associated minimum track radius, the shortest length of wire being 200mm and the minimum track radius for which is 803mm.
Think you'll need a lot of space for any curves with the Peco system.
Eddie