Has anyone used either of these with glass to go in the kiln ?

the Staz-on, does anyone know if this will withstand kiln temperatures of 850oC ? i know it's supposed to be permanent but not sure if it will withstand the heat .

I also got well excited today as I read about ceramic decals where you print your own photography onto paper and bung it in the kiln and can have photography on ceramics...

i wish i had more cash to invest in all this!!!