I condition mine in primary in the fridge. Takes about 6 weeks for the yeast to drop out (depending on the yeast), sometimes sooner. Racking to a keg or secondary and getting it off the yeast would probably expedite that by a couple weeks or so. I wait till it clears to keg it so I don't have a bunch of sludge in the bottom of the keg. If it's in the keg it should have some CO2 to protect the beer from oxidation, but not necessary to fully carbonate it if you don't want to right away. If you do carbonate it, so what? Not gonna matter either way.