Yes.
Yes.
and
.....YES!
The moment I switched to PVC enclosures years ago I noticed my hygrometer start reading in the 55% range with newspaper substrate and a small water bowl on the cool side of the enclosure. If I would have setup newspaper in a glass tank my humidity would have been somewhere around 20-30%.
PVC cages hold humidity so well that once I started realizing my cages never read anything different than 50-60%, I rarely check them anymore.
Just keep in mind that substrates you once loved in glass tanks (Eco earth, coconut fiber, cypress mulch) will often give you TOO much humidity in PVC.....so for me I discovered substrates like aspen, kraft paper, and newspaper are much better for me personally to hit my 50-60% mark.
After YEARS of battling glass tanks for proper humidity, I was one happy keeper.
With you being in Ontario, and me being in Wisconsin we shouldn't have drastically different humidity levels I would think.