As an aside to the regulation aspect of doing the IFR to VFR and back routine, who pays for the aircraft hours and instructor wages whilst the CFII is "hour building" and keeping current at ILS approaches?
How much hobbs time, and what %age of the lesson, is done with the IFR aspect (departure clearances presumably taken with engine running?), radar vectors, etc.?
How do you justify to the students that it isn't *actually* OK to take off in crap weather - but you can. Do as I say, not as I do?
Just an opinion, and you are (of course) welcome to your own - but I think it's a crap way to teach and hard to justify the cost to the student. It's a generic problem of being paid by the "flight hour" I guess. (No, I don't have a solution).