i liked it. Nice and old school. However, to be critical in a friendly way (because i think we are all interested in getting the BEST tone possible out of our instruments, and more help from more channels, IMHO, is awesome), it seems a bit thin, not terribly, but noticeable to make a difference. Also, seems a tad, may i emphasize tad, compressed - now, i don't know if that was the tone you were going for, but to my ears it could have come out more, been a bit more open.
overall though, the riffing RAWKS