Long/Thermal Cycling Bibs

I’m debating buying a thermal bib for early spring here in Canada (and hopefully use in the fall as well). I am just wondering if many people find they get a lot of use out of them or if it’s better to just suck it up and be a little cold on the legs. I live in Canada on the border of Ontario and Quebec for reference or if anyone else lives in that area.

Alternatively, does anyone have any tricks for using short bibs and keeping their legs warm in cooler weather? (Besides pedalling harder lol)