As of version 4.0.4, this client uses an individual peer_id, so it's okay to run both RatioMaster Plus and qBittorrent at the same time. As of version 4.3.0, anonymous mode has no effect on announce requests for private torrents, so enabling it shouldn't be a detection vector.
This client emulates the following settings, so make sure your real qBittorrent 4.6.2 also uses them:
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