Update: All of the following should be taken with "on my bass" etc.
My Wood Realist started acting funny; Sometimes the bridge foot would shift, (after changing strings or just in transit) and produce a crackling sound through the pickup. It should be noted that the sound and output level of the pickup through an amp hadn't changed once this issue started, just the possibility of my bridge foot being in the wrong place, 1 time out of 100. Also, the top portion of the wood on the Realist had become to un-laminate slightly, on the broad side of the bridge foot between the bridge and fingerboard, like a small crack had developed in one of the wafers of wood. I figured this was a good opportunity to A/B the pickup vs the original model. Again, I hadn't noticed any loss of output or change in the sound of the pickup compared to the day I installed it.
After my gig, I set up my amp (EA iAmp 800 into a Wizzy 12 M-Line) and ran the Wood Realist into the disengaged EQ. I marked where my bridge stood, because my bass has been feeling exceptionally great to play on for months now, and installed the foil version of the pickup. I ran the new pickup through the disengaged EQ on the amp and immediately noticed the output is way hotter. I've always had to turn my preamp section into the neighborhood of "5" (12 o'clock) to get a full signal into the EQ section, but the new pickup requires me to go to only 2 or 3.
The sound is what I was really interested in. With the EQ totally disengaged on both pickups, the foil version yields much more of a full-bodied, warm, "classic" double bass sound. This is exactly what I was looking for, as I needed to turn the "Lo" knob up about 50% to get anywhere close to that with the wood version. I now understand what Bob Gollihur means when he describes the warm, woody, double bass "from a distance" sound of the Realist on his website. The Wood version always gave me a somewhat brittle sound with a lot of finger noise.
I've yet to try this slight change on a gig, but I'm looking forward to it!