"It may also be against regulations in many places to even have welding gasses in the home."

So true, that is one reason why I use propane. I am not really sure it changes much, in the sense that I have a torch attached to two bottles in my detatched garage. But I basically have oxygen which is used medically in the home, and propane in the same bottle every BBQ owner has. So at the very least I hope to escape a lynch mob. I never weld in the cold season, so I am always open to the air. Regretably, around here that is about 50% of the year that I miss out on!

Another reason to use propane in regular torches when (rarely) possible.

I almost had a fire the first time I welded a water bottle rack. It's an 1/8" thick which means 125 amps, except there isn't anything like the amount of material there to require that, so I chose some number, and even that got it so hot a molten section dropped to the floor where it started a fire. In the welding hood, ancilary fires aren't always obvious. It can be a good idea to have another set of eyes in the shop shielded from the main flash, but able to see any developing hazards, the first time one tries something completely new.