I needed a real rear tire prior to heading up to the Asheville area for some riding so I decided to get old reliable - a Kenda Nevegal. I had read some thread on MTBR about cutting some of the knobs off (every other transitional knob) to increase performance (better cornering and faster rolling) so I figured why not try it. I got the proper tool (some cutting pliers) and went to town tonight on the tire. It only took about 30 min to complete, but I won't have a chance to try it out until next Thursday when I'm up in NC.
Here's a pic of the tool used to cut the knobs -
Here's what the tire looks like with the knobs removed -