Prior to that actually - The B7RLEs worked on the guided route 22 (and I assume the Tridents on the 2, which is also on the guided busway) also have them, but obviously the system on the E400Hs should be the improved system, feeding info directly from Lothian's server (like their smarphone apps).
Don't like the look of the seat cashion, particularly on the E400Hs. They look awful, like the whole seats have been covered with mould. Why don't they just stick with the old tartan moquette, but use the green style tartan for the E400Hs?
GR614: This is because they are longer than the ones you normally see - Like their B9TLs, they are built to 11.4m (or 11.3m, I can't remember), comparing to the London ones, which are 10.2m and Stagecoach ones (10.8m). Those with Reading Buses are also built to the longer length, and spots the same two small windows in the middle: