A bit late to reply, but doing something like this works. The URI is hard-coded, so it’s not perfect, but:
client_logos:
label: Client Logos
type: structure
entry: <img src="/home/{{logo_image}}">
fields:
logo_image:
label: Image
type: selector
mode: single
size: 4
options:
- image
–>
(with a bit of custom CSS to make it into a grid)
