Hmm, a bit dark.
I used my Agfa Isola I which has a fixed shutter speed of 1/30s and two apertures (f/8 and f/11) - I chose f/8.
I loaded it with Ilford HP5+ (rated 400 ISO) but I decided to process it as if it was 3200 ISO figuring it would be enough for an image to come out.
I was wrong, I had to brighten this in Photoshop to get anything usable - most of the roll was completely blank.
Still, cheap experiment and now I know better...