I will tell you all I know about the topic. No time for more hands-on help, sadly 
As a Get Us PPE style initiative this makes sense. For the general public it would not make sense as there are just not enough of these masks around for everyone.
To my knowledge, healthcare workers prefer the FFP2 / FFP2 “filtering facepiece” single-use masks due to comfort in long shifts and because they don’t have to be disinfected. But if the situation gets much worse, they will need everything that can be made available. So yea, I think it makes sense.