I had the clamp as spare at home from another jet, but there are many other ways to do it, a simple hole and tap from the side of the fuse into the front aluminum spar would do the trick, no need to go over board
actually one guy just put a piece of tape on the front - that works too. but i do like neater solutions.

Yes i was told the clamp will be added to future kits. for me it is really great that Top RC is listening to pilot feedback and modifying accordingly.