yes, it does work well. you can make an IR for any and all tones you want, then load them into the Epsi. it is a little involved, but doable if you HAVE TO have a certain tone and it needs to be exact.

i've done this a few times, but i was surprised by the fact that i didn't actually like the tone of say John Petrucci when i was playing through that same rig tone. so after a few tries at playing through other people's rigs i decided that i couldn't get past a certain tone and feel when i want to play with ispiration. so nowadays i use what inspires me, then reamp to get the tone that fit's in the mix.