I've just started doing this routine as part of my walk around set. It's a killer.
This is a very, very entertaining routine, with constant magical moments throughout. It requires, and deserves, a good amount of work put in to make it great. The video instruction is superb, and contains a number of great moves and subtleties which are also worth the price of the download, which I always find is the mark of a great download. The routine does require you to be able to recognise your different knives by feel, while they're in your pocket. Pop Haydn uses special knives that have a different texture on each colur, but you don't need to get those knives. I have the TCC set, and I made myself a little holder out of playing cards and duct tape, and that works perfectly fine. I highly highly recommend this trick. Watch the video above, and if it tickles your fancy, you should get it. It's as strong as it looks.

I've done the color changing knives routine before, but not the way Pop does it. This is the best routine I've seen and I love the way it flows. I use this in my walk around gigs and it always get s agreat reaction.

Pop's routines have persevered the ravishes of time along with the best with everything he publishes. Excellent quality in video and teaching with no details spared. Comes very highly recommended.