I have used it before. It is useless as a normal solid type mold, it would take years to go off.
It is used to make what I would call 'skin molds'. You paint on about 20 very thin coats, letting each one dry thoroughly before adding the next. When done, the mold is pealed off the master and is ready for casting. A thickening agent can be added after the first couple of coats, this will reduce the total coats required. Hairbrush drying helps too.
It is generally used for casting resin or similar. Being latex rubber,I doubt it would take the heat of plastic. I made a mold of my thumb, as a novelty keyring. I received lots of comments from it. I then molded an old thumb drive into it, for fun.
It produces very fine detail well, including finger prints etc. Casting, it has a very limited life, I only managed to cast half a dozen, before significant loss of detail. Also, being rubber AND using resin, there was a large shrinkage problem.
For casting lures (hardbaits) it is not very practical, as the skin has to stretch over the casting to remove, therefore the pour hole (sprue) has to be large enough to allow this. Works well for open bottom items, like chess pieces, figurines, small garden gnomes, etc.
Hope this helps.
Dave