The weight and the transportation is not an issue with an e-bike. It would feel weird if a safe, bolt cutters solid chain would weigh only a few 100Gramm.
For tours I store the chain without any problems in a Gepäckträgerbox (which was anyway planned / available), rattles and clatters as synonymous nix.
Lock and key function just fine, no Hakelei, the key seat / fits great!
The polymer coating for scratch protection is a bit poor and certainly will not last as long, which will sooner or later need to renew.
Although all mobile guards certainly can do little against professional, I hope to have made it as difficult as possible, at least with this chain.