alright, I give it a shot...
pshh! What's with the skis, dude? "I'm like, a cool ice-climber-skier, dude! It'll go..." Heheh... uh-oh I am in for some major ass-whupin now...
But seriously, I figured the knot was in there on purpose, to create more drag in the event of a fall over any snow edges? I read some accounts of such knots greatly aiding the ability to arrest someone's fall into a crevasse. Course, they were butterfly knots...