*hic*
village idiot :D
You can still get pretty decent flash nose bands. I have one of these nosebands![]()
But in order for the flash to work the cavesson has to be cranked tight. Tight cavessons can cause tooth and ulceration problems. The one you've shown is a crank so presumably you don't mind about that, however with a "normal" cavesson the flash will pull the noseband down over time, losing the effectiveness of the flash whilst at the same time increasing the pressure of the cavesson on the teeth and inside of the cheeks.
But then I have a thing about tight cavessons, as you've probably gathered, and wouldn't use one given any alternative.