IIRC TJ and aracer were adamant it should be the RH lane (I may be wrong) in every situation.
Gosh, did I? I can't say I definitely didn't, but I'd be surprised (I'll check with TJ ) If anything I'd suggest the opposite that the left lane is correct most of the time, but that it depends.
The particular example I'd use which doesn't follow most people's rule to use the right lane for exits after 12 o'clock is here where coming from the SW (bottom left) you use the left lane for the major 2nd exit and the right lane for the 3rd. You do get some people using the right lane to go "straight on" and worse yet indicating right to do so, which is clearly incorrect
That's based on the traffic flows where the majority of traffic takes the 2nd exit and 75%+ of the remainder takes the 3rd, with the traffic flows being illustrated quite well by the sign