I dont think it would be any problem... both media absorb and release RH.. it might take a little while for everything to balance out depending on the absorption and release rate of the two different substances.. (your KL and beads might be swapping spit for a little while).. but I cant see how it could have any kind of negative effect on your sticks as long as you didnt put them in the environment until the you got everything set...
question though... why both?
If youve purchased KL.. you likely have more than enough on hand to last you for the next several years....
Im assuming you already have beads, but need more, and dont want to spend the extra money on more beads as opposed to going the KL route?