I generally manage to spot buses ahead and find being in the left lane more convenient for turning left off Edward Street -or going straight ahead if cars waiting to turn right or going straight ahead on Eastern Road, but by all means,Tory Boy, stay on the right if you wish.
These bus lanes, especially the mini stretch heading east, are pretty pointless, but if you use them please note they are only restricted during peak hours. Help yourselves to the left hand lane at other times.