Guy I used to play with had that setup. Dual 81's in his explorer. I had dual 81's in my
Les Paul. They sounded similar but different. IMO, a Duncan JB sounds better. I briefly had a Hamer custom (Explorer style body) with a JB and a '59 and it was awesome. Drove amps really well, as in better than my LP. Fatter sound too.
Were I to do the EMG thing over again, I'd go with an 85 in the bridge and a 60 for the neck.