Ah, it was you who bought it then
This one hadn't escaped my attention and I may have gone for it myself if I hadn't got the last used 600/4 they had.
Can't think of too many tips but one stands out if using a gimbal type head... don't take the camera off the lens unless you already have the lens pointing downwards, the sudden change in balance can make for a scary and rapid drop!
Enjoy!!
Cheers,
Andy