with the transverse stripes it is difficult to use with the garmin device. i already saw OSM on garmins without the stripes. So the question is: how to??
As far as I know, Garmin maps are vector maps, so the rendering is done in the device.
However, I think there isn’t a one to one relation between OSM feature types and Garmin types, so it may be possible to create a map that represents OSM features with Garmin features that Garmin renders more to your liking.