I've heard such great things about the QC, I'm excited for you. Yes, you can load the IRs from the Syn Cab Pack - not the *.syx files that are specifically for the AxeFX, but also included are *.wav IR files that are a pretty universal IR format.
This article is two years old, and the process may be simpler now, or not, but this is still active on Neural's site, so I expect this is still the process.
neuraldsp.com
IR captures are really hard to do properly, so I don't even bother trying. Syn took the time, and I'm glad he did!