I love W&S stuff, not only are the products solid, the company behind it is amazing. Great support if you run into issues, and their upgrade program can't be beat.
I run a Warm & Safe Gen 4 jacket with Gerbing T5 gloves on one circuit, Firstgear (rebranded W&S) pants and socks on the other circuit, controlled by their wireless troller (on top of the front brake master is a great place for it). Once you get over the credit card bill, it really changes how far you can go in comfort when it's cold.
The only thing I will caution against is to wear a pair of socks underneath the heated socks. Years ago, I rode about 10 hours at 5-10c. Had the full heated setup humming along. Get home to find that the heated element on the socks left a minor burn on the top of my feet.
Edit: Forgot to mention you can run jacket and pants on one circuit, and gloves and socks on the other, or whatever combo you want.