My two cents,
My stock IWS chain, with the stock 04 cam chain slider had two clicks left after roughly 188 hours. It had 4 clicks left only 30 hours prior.
I replaced it with a DID chain, with the rivet type link. If you have the rivet type you really need to have Husaberg/KTM tool to make it easy on yourself.
With the new chain, and the updated 05 slider, I think the tensioner only went out 2 or 3 clicks.
Dale