UPDATE (in case anyone cares):
Well, now that the honeymoon phase is long over with, I gotta say, I don't regret going with the J/MM pickups on this bass one bit, now that I have gigged it many times.
This bass comes to every gig with me, and usually sees the last two sets of every night. I could very easily bring only this one, and be completely happy, but my 3005 with Bart CB's never gets left behind---that bass truly is THAT good.
The slap tone on this one is out of this world----When I ordered this, I told Gard I was hoping for something kind of approaching the Stingray-era Flea sound, and dammit if this doesn't get me REALLY close. It has a lot of zing on top, and the bottom is tight, punchy, deep, but yet easily controlled. Never boomy at all---it almost has a bit of natural compression and evenness to it, if that makes sense?..... I usually run both pickups on, and then use the 3-way switch on the MM pickup--which is something I thought I wouldn't make use of

---to change things up when needed. I have no idea how the switch is configured, so I just call it top, middle, and bottom positions.
So, yeah, if anyone is considering a Roscoe with the MM or J/MM pickup configuration, and you are looking for *that* sound, don't hesitate to go ahead with it. I was a bit nervous as to how this one would turn out for me, but it nailed what I was hoping for.
Oh yeah, and it'll be playing to some VERY large crowds starting this winter and next summer. I got an offer from a VERY popular variety/cover band in the area to take over the bass spot. Actually going to work out the details this afternoon. But, they travel in a big fancy motorhome/bus, and have a seperate cube truck that hauls the equipment (which includes EIGHT JBL dual 18 subs, and EIGHT JBL dual 15/horn tops, and 10's of thousands of watts of power behind them---they do a ton of outdoors shows and street dances). Not a full time gig, so I will actually be able to take it and continue with my day/during the week job. But I will be saying goodbye to my current band.