It's not April 1st for another 3 weeks.
I can see at least 1 problem with this; by the time you take one hand off the bars and then take your eyes off the road for the time it takes to adjust the angle to see the traffic, you will have either hit the kerb or run into the back of the bus that stopped in front of you! Much quicker and safer to do what we do just now, and look over your shoulder IMHO.