Thanks Leon! Really good and informative video.
I have a question. Can you use the line out of a THD Hotplate for the mic + DI method of capturing irs?
IIRC the Hotplate is a resistive load - I'd usually advocate for a reactive load, but if you set the Axe-Fx III amp block speaker impedance to the resistive type, match with the hotplate and then try other impedance curves in the amp block you should get some very usable results.