Someone on the XDA forums confirmed that it works with Bell, but if LTE is that important to you, I don't know if it's a good idea to rely on what is essentially a 'hack' unless Google decides to officially support it.

Yes. I simply followed the procedure as shown in the OP.

You also need a LTE compatible Micro SIM card. Most phones sold by the canadian carriers nowadays do have them, even if they are not 4G.