Mobile Responsive Branding template Question

Summary

Mobile Responsive Branding Question - one site or two?

Content

I'm currently testing the mobile responsive template on our staging career site, and I have a few questions for someone who has already worked through this:

I don't like how the buttons look on the main site while on a desktop. If you have implemented the mobile responsive branding template for your career site, did you use this template for you main external site? Or did you apply it to you mobile site and then keep a separate site for desktop? (I know you aren't required to have separate sites, but is it working well for you?)