I've used it for a while now. California may recognise it as a carcinogen, however theoretically so is bacon... As long as you don't drink the stuff you should be fine
The main pro - it bonds in no time flat! The main con - it bonds in no time flat
The way it is supposed to be used is that you position the model parts and then run a small amount along the join. Capillary action draws the stuff into the joint and it bonds really quickly. In some cases this is a really useful trait. In others you need a bit of wiggle room to help settle the parts into place so its less useful. For the second tpe of use he only way I've founda roud it is to really load he joint with fluid before smacking the parts together. You get a couple of seconds extra time to position, however you often end up forcing melted plastic out of the side of the joint that needs to be cleaned up.
Actually, another great benefit is that it dries so quickly that it doesn't affect the surface finish that badly. With other plastic cements if you drip it a bit away from the joint you get really bad surface damage. This stuff really only affects the very surface of the plastic.
However don't do what I did and knock it over into a pile of waiting parts. In bulk it is powerful enough to dissolve quite a bit.
So summary - If you need stuff bonded quickly and can dry fit it all before-hand then its ace. If you need sometime to line the joint up after applying then a slower acting glue would be better.