I was invited to a jam last night, wasn't exactly sure of the music, and brought my beater '89 Squier II P/w EMG's. As it turned out, the music was Tom Waits-ish, mixed with folk & country material on acoustics & electrics w/ mandolin. There was a SWR Workingman 15' combo, with all knobs set flat. I plugged in, turned down my tone knob, and was completely set. Playing with my thumb and controlling the sustain gave me a convincing upright tone (that blended well with the acoustic instruments), and the other musicians seemed pleased. The beauty is that we could have been playing Iron Maiden/Janes Addiction covers, and the P Bass would still have been completely appropriate. And people still ask "do I really need a P?"