BOWP is not a visa. BOWP will only allow you to work in Canada. You may now wait for your PR visa or you can apply for a TRV extension while you wait for your PR visa approval if you're in a time crunch to leave the country.
Update: You can leave the country with or without a BOWP. I meant to say, you cannot come back only with a BOWP and not a visa.
Applied on May 6, still waiting. Agent said it was sent to Edmonton for review, and it might take up to 5 months since the day it was sent to Edmonton.