ThisI get it. Truth is, if you've been dialing in your tones for a Cab block plus a real cab, you've been dialing in too much treble all along. That's the only way to defeat the double-cab "blanket."
I tried it as well before and though it does sound cool in some cases, most times you're just getting a double 'filter' or 'blanket' on your sound
Best to use just the real cab in your case, or switch to frfr for the cabs in the Axe-Fx