The reason you don't want "light tricks" hermies is because it produces hermies more sensitive to "light tricks." STS possibly creates hermies more sensitive to STS... which is perfectly fine. STS isn't found naturally, almost zero chance of accidental exposure.
Yes, Soma helped create a crapload of hermie genetics by posting that information up. With light tricks, you do it once and then weed out the hermies as you look for breeding material. Most of the home growers seem to have forgotten or not understood the last part.
Use STS, it works great.