I have been running mine in.
I like it.
I just turned the interior lights off because really in day time the lights weren't all that noticeable, and the cab lights were annoying me. I'll sort that another time.
mine is a bit slow at top speed as well. it actually ran quicker with a different decoder in it I noticed. with a zimo in it is smoother but slower at top speed.
if I can get round to it I will speed match it with a 156 and try running it coupled up.
I quite like the coupling arrangement but I can imagine some people will bend and break the pins or the holding latch. it is close coupled between the vehicles though so looks good.
cheers
tim