Apparently some guys build entire frames with silver and an air-MAPP torch. That's what Talbot does in his book.
I used air-Mapp to build racks (w. brass) and other thingies. Haven't used it in a while nor touched a frame with it, but it was cool to get a feel for brazing. I'm sure it'll work fine for braze-ons and the silver you linked.
Besides the lower heat, the flame that comes out is quite big compared to an oxy-fuel flame. So joints may be a bit messy and building fillets is quite hard.