If your going to run out and buy it I would say just stick to the IP. work it hard and long and you'll get results..If you already have it sure give it a try I just didn't see marvous results from it like i expected..but hey i'm new and have a lot to learn..
I used a porter cable.....I worked in and gave a little bit of pressure. But didnt work it that much. My whole process was wash/clay/IP/FP/nxt/#16 and when it gets a little warmer I was going to do dacp/fp/aio/zaino/#16.