I think some hivis stuff looks better than others. You don't need to go too crazy. I used to just wear a reflective vest like this and call it a day: https://www.amazon.com/dp/B00FOUE188?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_4 I've been running a very long time and have had some close calls with cars. If you run often enough, it's inevitable. So I do think it's worth being cautious. Who are you worried about seeing you? Is this on a college campus or something? I promise your average person does not care one iota what you wear on your run.
