@paregorios @steko @Electricarchaeo @captain_primate @precatlady @ekansa
I put a bit of hv code online at https://github.com/sfsheath/amphitheaters-holoviews-folium/blob/master/amphitheaters-holoviews-folium.ipynb . To get full effect, click through on links in first cell to see rendered HTML for the viz and map (which is folium). This is a cleaned-up version of a longer notebook I used in class.
tl;dr: using '+' and '*' to combine outputs is wicked cool if you ignore the annoying config mechanism for hv.