Last September I ordered an L45 twin blade Strat pup from Bill Lawrence for my Musicmaster Bass. It sounded "OK" but was weak in output. I wrote Bill a note saying what I observed and politely suggested they not recommend this particular pup for bass. I figured that was the end of it. To my surprise, I got a phone call from Bill a few days later. He told me "you do not put a guitar pickup in a bass." He said the magnetic field requirements were different. He asked me to return the L45 and said he would take care of this issue for me. Fast forward 3 months. I got a neat Strat sized bass pup in the mail from Bill! It is single coil and is like a Keystone in that it is very low noise and goes to 11! My Musicmaster Bass is now very clear, punchy and piano string like. What great folks there at Wilde. 
I had a chance to hear Bill use them in guitar when he was developing them, so I can guess how impressive the performance of your pickup is!