Native client is called only for 1.7 working copies. If there're 1.6 copies or a mix of 1.6 and 1.7, only 1.7 copies would be processed with native client.
Operations done through native client when command line acceleration is chosen:
- status and info requests: only for updating Changes | Local
- update: for http (since 11.1.3), for https (since 128.101 - 12.1 EAP)
- commit: for http and https - since 128.101 - 12.1 EAP