On the server-side, one (to me interesting) caveat was having to, beyond setting read only = no, explicitly specify writable = yes. This took me a while to notice and I was quite unsuccessfully suspecting group access rights and other innocent objects around here. While this peculiarity could be down to some misterious mistake I made, and is contradicting some key equivalence mentioned on the web, it seems to work well now.
Not so much effort on the client-side: as mentioned here, pcmanfm allows URI's in the form smb://server_address to access the root folder.
Nice and easy.
