Here's a soundcloud link to a sample!
I recorded this direct into my interface using the VHX's cab emulation. The guitar is a Meteora, which is the closest I have to what you're after - I keep it at either C standard or drop A#, so it's a little higher than your B standard, but closeish. I grabbed some drum samples and did some chuggawuggas. The first section is without the pitch shifter, and the second is with the pitch shifter tuned down three semitones. It's polyphonic, and works pretty well. No noticeable latency. It's not absolutely perfect, but depending on what you're after it could be fine. I used drums in a mix to place it in context so you can hear what it might sound like with other stuff going on, and there's a bit at the end without drums so you can hear that as well. The pitch shifter is set on the 'capo' setting mixed at 100%.