@AgentWomack I have over 2000 miles on OneWheels and have never been attacked by a dog. I ride VERY slow (almost walk speed) when I go by them and, if leashed, I ask the owner if they are "ok" as I approach. I do see an occasional dog (maybe 1 in 20) get excited or even try to pull towards me, but even then, never TOO bad.
Now I realize me being in a city and most dogs here are used to "things" going by them, sometimes at medium to high speed, probably makes a difference compared to someone riding trails in the woods with loose dogs around, so not saying this doesn't happen at all. It's just that some of us, due to circumstances and the areas we ride, may not see this as an issue.
Be careful out there!