This unit really looks interesting...
https://www.youtube.com/watch?v=VQY5KfftWaM&t=430s
I like the ease of use of this unit and also like the quality of light that it seems to be able to pump out. It is an LED which can produce a higher intensity flash as well as a constant light.
Although this light is really low powered. I think that it could be used as a specialized tool which would be great for portraits, especially of female subjects. The incorporation of the constant LED light gives you a modeling light.
They tout it as being HSS capable but, I strongly suspect that this is not the standard HSS in which a strobe pumps out a series of bursts. I have a tiny LED hotshoe flash that I can shoot at a high shutter speed. This doesn't emit a series of flashes but, rather emits a light that is longer in duration and will allow the camera's shutter to cover the entire frame without the notorious black bar that we get when shooting at a shutter speed faster than our maximum sync speed without HSS selected. However, this tiny flash doesn't have a constant light capability and the flash tube (like the 270EX) is simply tiny. Also, of course, this type of flash will not freeze action...
The advantage to this type of HSS is that it can be measured with a standard (no need for a Sekonic 858D) flash meter.
The ability to dial in your camera shutter speed as well as the Kelvin color is another nice bonus.
It seems like this unit does quite well on the camera hotshoe in either horizontal or vertical camera positions.
I am wondering it this diffuser for a standard hotshoe flash might not also do well on camera in both the horizontal and vertical camera positions. Of course, it would not have many of the other advantages of the Rotolight II... https://www.ebay.com/itm/16-40cm-Rou...oAAOSwqlha9Q6O
OTOH: the Rotolight II costs $400 USD while this diffuser costs only ten bucks. But, this would be significantly lighter in weight than a flash on a bracket with a large modifier.
Actually, the price of the Rotolight II is the reason I am not going to purchase one. But, if GODOX comes out with a copy... Well