Must be a dud dealer you've got over there.
My ARB winch bar was supplied & fitted by the ARB store just around the corner from the LR dealer where I bought the Disco. The LR dealer recommended them to me and even arranged the booking (the LR OEM bar had not been released onto the market at that time).
The only part of their recommendation that I did not go along with was to wait a bit longer for a colour-matched bar. I travel between Perth & Kalgoorlie regularly, and wanted something straight away (ARB had a black one available within a week). As it turns out, I actually prefer the black bar on the white D4 in any case.
Have so far cleaned up 3 roos with it (only one of which was what I'd call a pretty solid hit) - no sign of any damage to the bar or vehicle.
And I don't have any problem with getting at the light globes to change them when I need to. ;)

