I would like to give my thoughts on this subject.
First the situation is terrible where you have people refusing to work because they want better working conditions, then to make the situation worse you have other pilots doing the work the striking pilots refused to do.
It is a hopeless situation in many ways.
I personally could not live with myself if I were to undermine my fellow colleagues in aviation by helping the company they are on strike against.
So I personally would not do it, even if it meant losing my job because I would still have my self respect.
The above are only my thoughts and not meant to slag the Canadian pilots who are flying the trips.
We each must do what we think we have to do.