I'll take a swing at this based on my interpretation:
Check Clause 3.4.1.1 of the EGBC's QMG for "Documented Independent Review of Structural Design"
"...if a design is prepared in BC or is for a structure to be built or erect in BC, it must undergo an Independent Review that is compliant with the Bylaws before Documents are issued for construction or implementation.."
So, assuming that your assumption is correct and APEGS and the governing SK law does not require independent review, I think you would not need to complete independent review only if:
- you are operating a business in Saskatchewan (ie. you are a design office physically located in SK)
- you are providing design for a structural project in Saskatchewan
Therefore, you would require an independent review if either is true:
- you are operating a business in BC (ie. you are a design office physically located in BC), regardless of your project location
- you are providing design for a structural project in BC, regardless of your design office location
My interpretation is based on the limitation of the PGA or other governing provincial Acts. They don't cross borders so EGBC would be out of their jurisdiction to enforce a requirement for a project in SK designed by a firm physically located in SK.
However, as @BAretired kind of alludes to, any complaint in SK would likely have an effect in your other jurisdictions. Notice on most renewal forms that there is a box to check yes/no if you've had complaints in other jurisdictions.