We are talking about "temporarily entering the H-V curve in a twin", I guess you actually agree with me but find that difficult?
No, I don't, not when carrying pax - it is duty of care and you are totally responsible for their safety.
This discussion is about poor legislation and certification vs the need to get the job done but the overriding argument has to be about safety.
As has been asked before - would you travel or put your wife and kids on an aircraft if you knew that an engine failure at a critical stage of flight would result in a hazardous visit to the scenery? Or would you rather that the certification and operating procedures ensured a safe landing or safe continued flight with no period (however short) of extra risk?
At TDP on an aircraft that needs penetration into the H-V curve, you are working the engines at MTOP - and if one is going to fail, that is the most likely time.
Yes I have had an engine failure in a twin but not at a critical stage of flight so no drama - would have been much more exciting in a single though.