I had an idea today (like you do!) I'm going to try banana seeds in florists oasis.......wet the oasis push the seeds in, seal in a plastic bag and put in the propagator. If i put them in neat rows it should be easy to just slice the seed out and pot up without disturbing the root!! As it happens I have some seeds in soak right now (Musa Velutina ) so will try 1/2 using this method and let you know if it works - or not!