I've seen a 1,000 grit edge improved by a CrO loaded strop. So, from the Rika you certainly could as well.
If you're wanting a toothy edge, but having problems removing the burr on your Tojiro's.....why not strop on a felt pad:http://www.chefknivestogo.com/rohafepad113.html
Stropping on a leather pad with CrO is going to go against the toothy edge. A CrO edge is going to be highly refined as it's equivalent to a 60,000 grit stone.
Now, that's not to say you still can't have a toothy edge after stropping on leather and CrO, but why do it if you're not after a highly refined edge?!?!
If you want a toothy edge, stop at the Rika (which isn't even really toothy IMHO) and strop on a felt pad. Perhaps load the felt pad with a 1 Micron diamond spray. The diamond is more aggressive and leaves a toothier edge than CrO in my opinion.