A few decades back I was using a GE-7 as a solo boost. Not to shape the solo tone as much as just boost it in the mix. I usually used a hot bridge bucker (DMZ X2N) on my Strat. What ended up happening is that I did find a use for it, where I used it to reshape the sound for one song that I was playing on the middle pup of said Strat. It worked very well, got a great boosted single coil sound that sat in the mix well. That was as far as it went. I found the GE-7 not all that effective as a solo boost (YMMV), and we stopped playing that particular song. Still, I can understand the potential with an outboard eq.