The design I've been working on is just about done now and ready to be sent off to the printers.
I think they've shut down for the holiday's but I've costed the print at around £100. The hook part is by far the most expensive coming in at nearly £40 for that one bit alone, so it may work out more economical and stronger to have a more simple hook made from aluminium.
Anyhoo, here are some renderings.. one as it might look in polished aluminium and a few as it would look if it was made from LEGO
Edit: I'm not allowed to say BEAVER
on here apparently