i tend to like the distorted reverb session a lot for anything that involves "roomsound", and i imagine a cab as a very small room (additionally the room where you sampled it in comes into play also, if it is not done in one of these boxes ...) the additional kernels make the "room" feeling much more natural to my ears. you have to look out for artefacts though, that can come with the kernels.
system 1: windows 8 32 bit - samplitude prox/x3, tracktion6/7, reaper system 2: mac osx yosemite - reaper(32+64bit), tracktion6/7(32+64bit)
both systems on: macbook pro (late 2009), core 2 duo 3,06 ghz, 4 gb ram, graphic: nvidia geforce 9600M GT 512 MB
Funny, I switched to your earlier method 'distorted pre', you switched to my method by using a distorted reverb .
I figured old guitar IRs were technically very short reverbs, so I started with a reverb which worked out well.. but with the pre programs I remove some of the room sound from the captures. Since 'the room' is my lively living room, I find that a good thing