Argentum silver and the water torch

Hey,
I wanted to get a water torch such as the HydroFlux but was put off by
reports that it doesn't work so well with sterling silver. Apparently,
sterling has great "heat sinking" abilities and the small pin point flame
produced by the HydroFlux won't heat the metal enough for a good soldering
experience.

But...I read at the Hauser and Miller website
http://www.hauserandmiller.com/fab/argentium.html about Argentum where it
says that it has (I quote):
"Lower heat and electrical conductivity, enabling the alloy to be
resistance, plasma and laser welded."

SO, I wonder if the HydroFlux will work with Argentum where it fails with
regular sterling.

Anyone have any idea?

Thanks,
PW