Heating, yes- with a rosebud tip-- but to get brazing temps, nothing works as well as an oxy/acetylene torch. Do you know how to get a neutral flame at the tip with your torch set-up.
You can, in a pinch, use a cutting tip/head on a combo torch for pre-heating mild steels- but for efficiency and less overall usage of acetylene, use a rosebud tip.
For a heating oven set-up, oxy/propane works fine. Mapp is way more expensive than propane, at least where I live and have my shop set-up with my son-in-law. RWTF