Tubeless tires with tube-type rim
I'm considering the Heidenau K60 Scouts for my Triumph Tiger 800XC. The issue is that in the appropriate size (150/70-15 rear and 90/90-21 front) the K60's are tubeless ["TL" designation in the part number], whereas my rims require innertubes.
My question: Is it OK to run tubeless tires with tubes?