I too own a NB arm, sled and vest also! I enjoy working with the rig it is really well made and designed.
Nir told me he is developing a new version to his vest and I really hope to see what he comes up with. the current vest is a good fit for me, but could be better as I have a relative short and wide torso, I had thought on getting an exo vest but import tax in my country are unfair towards citizens and it made it financially impossible to buy and maintain steadicam equipment without being a big company with deep pockets.