One transistor forward with high voltage transformer reset?

[cupoftea]

Many years ago, there existed a very common converter known as the "One transistor forward with high voltage transformer reset". (OTFWHVTR)

Now it is pretty much a museum piece due to the invention of high CMTI bootstrap gate drivers and the "Two Transistor Forward". (the 2 tran forward can also be done with high voltage reset and can be run at higher-than-50%-duty-cycles, just like the OTFWHVTR).
So why do you think some people are still using the OTFWHVTR?

The OTFWHVTR also need two primary FETs, hi-side FET to do the reset.

 

[Easy peasy]

The one xtor fwd often has a reset wdg with diode to put the reset energy back into the supply

this is, or was, widely used.

You can use a single transistor with no reset parts, as long as the xtor can handle the high volts, sometimes a lower power catch ckt is used ( same as flyback, RCD ) to catch the initial spike due to leakage

An higher flyback voltage lessens the reset time which may be useful in some circumstances.

[ you can do this with a two switch forward as well, and the 2 sw flyback ]