"Excuse me, but how are you defining "street photography"?"
It really does not matter how I define 'street photography', it's the OP's question. The link does provide several real examples of what to expect from 8x10 daytime photos. DOF trade-off for shutter speed = people movement. Modern 400 speed film may provide 3 - 5 stop real speed difference over the glass plates, modern coated lenses another 2 - 3 stops.