The third link, the TKforums, has a whole entire section on combative PK... is that even possible? How would that really work I wonder... though I guess it would be rather interesting to watch it!
http://www.art-virtue.com/theories/t4-mind.htm This is a link that really describes some good energy consideration techniques as applied to Caligraphy however there are many parallels to pk and taichi that I could draw and just wanted to share with our group.