In my experience (limited to PARs/SRAs in military only and SRAs civil also, plus one 'Civvy' PAR at a military base)
1) Constant GP/azimuth info, either 'On' or directions to regain
2) no requirement on either SRA or PAR to respond unless asked to ie 'check gear down'/'report visual', etc
3) Descending while under ?IFR? control, even if VMC, without instruction could blow a few ATC fuses, I fancy
