pt-table-checksum and mysql 5.7 with binlog_format=ROW
with --no-check-binlog-format you would not be able to checksum from master to cascading slaves aside from master's immediate replicas, --no-check-binlog-format also sets the tool's session to STATEMENT format but does not change the global status. there should not be any issues when you use the option but we recommend you test them first.