Well FPObn, it's used every day without problems.
And do study the chart more closely before you comment next time.
Oslo have used RNAV from IAF since april 2011 to all runways, with a tweak to the linked style since april this year.
We vector less and less aircraft for final, IAF is "fed" from a PRNAV point merge system on each side.
ENGM aip page