For me outreach is definitely easier than travelling, as I frequently rely on public transport - which obviously makes working in the industry harder in the first place!! - which can be very expensive. It's harder to access services in small towns as I often know people (for example, my GP is my childhood GP and I have a family member working at the clinic, and the only walk-in/non-GP services are for 'youth' only). As I am trans, it makes it doubly hard, due to higher levels of ignorance in small towns (not inevitable, but sadly more common).
Safety issues is definitely a priority for me - I come under a lot of pressure from clients to do unsafe stuff and it is good to have skill provision services to fall back on. Also intersectional services - for example, specialist services for workers who are SWs + trans, SWs + MSM, SWs + disabled - as many services don't have awareness of these issues. Isolation can also be an issue when working in a small town, so things like online buddying and networking are also good.
I hope this helps!