I have read and heard from close friends that H&K customer service is not very friendly nor reliable. I have never had one but saying what I have heard from several friends. Plus I think we all know that Sig has gone way down in quality control.
I've owned a number of HK's over the years.. wanna guess how many times I have used their Customer Service?
Zip-Nada-Zilch-0.
Internet lore wouldn't dissuade me from anything...
That said, the only double stack 45 in my safe is an STI...