The answer to your question is actually "yes". It can and has been done successfully. HOWEVER...and this is a huge however...you MUST follow manufacturer spec on this installation method, the subfloor has to be super flat, and you have to use the correct adhesive. Only certain bamboo manufacturers will say you can float their products. It does work and depending on where you are located in the country that will dictate how strictly you need to follow environmental requirements. If the house is too humid or too dry you can say goodbye to that floated floor.