demand for RoR developers in southern Ontario?

I've heard RoR is super hot in Vancouver, but am wondering whether
there's healthy demand in Toronto and Ottawa. My concern is that I'm
still cutting my teeth in Ruby and don't want to be late to the party
when the market matures the way it did for PhP developers some years

There is a pretty strong market in toronto, but it is a niche so there aren’t a TON of companies like say for php or .NET.

It is pretty easy to find the companies yourself since it is a niche, you don’t really need a recruiter.