No. Professionals are expected to "stay in their lane." Reviewing and approving of work in a discipline they are not fully qualified in opens up liability.

No. My experience was that your could switch to architecture after two years of engineering. Two years of engineering wouldn't make you an engineer. Technically, you can't refer to yourself as an engineer unless you are a registered professional engineer, even if you have completed your undergrad.

Architecture in BC is a Masters-level professional degree, with Engineering strongly recommended as the undergraduate. I'd imagine most architects are also civil engineers.

I've met more architects with undergrad arts degrees than engineering. Actually I can't think of any I've come across that are civil engineer undergrads.

I'm thinking there's usually someone in the architect's office with some structural engineering background so that the overall design is good before it gets sent off to the professional engineer's office who really gets into the nitty gritty.

I was thinking of the Johnson Street Bridge as an example: conjured up by a designer but the engineers had to struggle to make it functional because more thought was put in to how it looked rather than how it worked.

Doesn't an architect have a little bit more technical know-how that would make the engineer's job easier?

Not really. We can copy stuff that worked before, such as typical column spacing in parkades, but we are fully expecting it to be thrown out by an engineer and our design must flex to suit. We don't do the loading math, we have little say on the structure unless it massively impacts the design - in which case we begin the long task of getting an engineer to try something different.

I've met more architects with undergrad arts degrees than engineering. Actually I can't think of any I've come across that are civil engineer undergrads.

Heck, an Architect doesn't even need a formal education, one can register and practice through AIBC if you've been working long enough and another Architect endorses your skill.