I know I'm a little late to the party, but I felt like weighing in anyway. So, at work I wear my state patch on my right and my company patch on the left. These were also provided to me by my work. However, I've been around the block, different states and different positions, including firefighting. So, I also keep all of my previous patches for my off-duty jacket. I wear NREMT at top right, followed by each state patch where I've worked underneath. My left is for certain companies, emt and fire, that are still near in my heart. Across the shoulders I have various informal patches, like my buddy's company "cold dead hands", a pro-gun rights t-shirt company.