Thank you very much for your message and interest in the Blue Diversion Toilet. So far we have been testing our prototype in Uganda and Kenya with very promising results, however, nothing has been done in Ethiopia so far. We would of course be very interested in field testing in Ethiopia, especially regarding the business model which we couldn't apply under real conditions so far, but technically wise this won't be possible. Our prototype needs to undergo a reengineering before going into the field again, implementing our findings from Nairobi.
At the moment we are seeking for industrial partners or investors in order to do so. You are a bit too early with your request since there are no "other" prototypes available.
I hope we could help you with this answer. If there is any path change, we will definitely give you an update.