To the OP, it should work, provided the pull ratio is the same 1:1 that SRAM loves so much.
Originally Posted by
samburger
I was able to do it with a 7 speed shifter & an 8 speed cassette, so I don't see why it wouldn't work.
Sam, your set-up worked because when going from 7spd to 8spd, manufacturers added more space with a longer freehub. When going from 8spd to 9spd to 10spd, Shimano/Sram just crammed more cogs into the same space by making the gaps between the cogs smaller.