You bet it is worth the effort! Just remember when you start, you have to finish this process. Use mutton cloth and a toothbrush with Autosol as it makes polishing all the welds and nooks and crannies easy. Once you have done the whole frame once, go do it all again! Like anything in this world - the more effort you put in, the better the end results. You could use a electric or air polisher and pro polishing compound blocks, as this would save time.
The Zaskar is 6000 series ball burnished alloy, whilst the Avalanche is 7000 series I believe - so not sure if the finish will stay looking as good on your frame, compared with a 6061 series frame. You may need to re-polish more often. Remember to use a good resin Polish afterwards to seal the shine in. GO for it Dude!
SHUT UP AND RIDE!
BOTM TOP THREE - GT Zaskar build thread http://www.retrobike.co.uk/forum/viewtopic.php?t=183918