I don't know the EC, but Minox used to make a daylight load developing tank that was pretty handy. Using it, the cartridges get dunked in developer, so I suspect re-use might be compromised. Maybe if they were carefully rinsed and quickly dried it would work.

I doubt you could get more than two strips between the sprocket holes out of 35 mm film, but I guess you might get two or three lengths out of a 36 exp. It's been a long time since I used my Minox B, but I was never all that impressed with the results in terms of grain.