Float it for sure. Most strand type bamboo hardwoods are dimensionally stable (nowadays) so nailing/cleating is fine but one of the advantages to using engineered boards is that you can float it. I'm pretty sure that the uniclic system is fine without applying glue to the grooves. Make sure that you leave a big enough gap around the perimeter of the room as a floating floor needs to be able to float and not bang into walls. When you see laminates, locking hardwoods etc... start to separate from eachother (usually on the short locking ends) it is because the floor didn't have enough room for movement (walls or door jambs for example) and so that energy shows up as gaps between the planks.
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