Lightbulb goes off.<br>
<br>
Now I get it.<br>
<br>
highway=cycleway means highway=path, bicycle=designated.<br>
<br>
bicycle=designated means bicycles are explicitly allowed (generally, by signage)<br><br>highway=footway means highway=path, foot=designated<br><br>therefore, highway=footway, bicycle=designated means highway=cycleway, foot=designated, which means highway=path, foot=designated, bicycle=designated.<br>
<br>Hmm, okay, I think I can deal with that.<br>