I have this Empress pedal. It's a bit over-the-top - lots of knobs, and it can be hard to see what you're doing when it's down on the floor. But will get you where you want to go (Miles, I don't think it could trick you into mistaking a humbucker for single coil or vice versa ... just too many other things in play, like the attack of the note, the sustain, clarity, etc.).
I think I mentioned this elsewhere... I have a little TwoRock combo amp, and I couldn't be more impressed with their engineering. They just got soooo many things right: easily-adjustable input impedance, a tube reverb with separate send/return controls, and an insanely useful EQ section that lets you extend the lows by pulling the bass knob, push the dirt in the mids by pulling the mid knob, and add presence and top end by pulling the treble knob.
That little TwoRock has just spoiled the shit out of me when it comes to EQ on a guitar amp. So now when I use a different amp, I feel like I struggle to get it dialed in like I want. That's what lead me to the Empress (they make really cool shit, IMO).
It's probably a lot better for a studio setting than a live rig.