The only reason for which it has any value is that it is not reasonably safe (if possible at all) to move BCH to an exchange and dump it.
"then your BCH is likely (but not guaranteed) to remain associated with the current private keys due to BCH's pseudo-replay-protection;"
can you elaborate on this....under what conditions could your BCH not be still associated?
If the replay protection isn't adequate, someone could simply rebroadcast your BCH transaction to the BTC network and your BTC would also be sent away. Additionally, I am unable to find an adequately tested wallet that I'd be okay enough to transact with.