In BC, you do not need to take MCCQE1 or MCCQE2, USMLE will suffice. So a US trained family doc can practice in BC with zero examination requirements, just paperwork and fees.
QE1, QE2 and Royal College Board Examination are not necessary if your willing to work under supervision until you receive a full license. Practicing under supervision is for variable periods of time, depending on province. E.g. in Ontario its generally for 18 months, before they do a formal assessment allowing you to remove that.
In my opinion working for 18 months for less pay is generally not worth it, unless you are far into practice. Exams are easy enough to just pass (if still in residency and not too far removed from medical school), so just take them for the $10-15k they cost. Thats far less than the 100k+ you will lose by having to pay for a supervisor.
I was speaking to a physician who went back to practice in ontario through pathway 4 and he said the hospital you are in pays for your supervisor and there is no difference in the pay of a person practicing independently vs restricted licence (supervision). Things may have been different for others however.