Help making a pasted strop

So I am about to set out making a pasted strop, CrO on one side, CeO on the other, and I realise that may be redundant but I have both so why not?
The CrO seems quite straight forward according to the wiki, but looking at the thread on CeO in advanced honing this seems harder.
I was initially thinking of making a strop that is maple or oak or pine for the handle and base, then putting 1/8" balsa on both sides, lapping it and pasting it. Since it seems CeO works better with soap on linen, I am now lost. I am now thinking of putting balsa on both sides, then stretching a finer denim over it as a pasting surface. Will this work for the CrO as well? What kind of [cheap, easy-to-find] soap would people recommend for the CeO?
If possible, can I paste a balsa surface with CeO like CrO, or is it significantly better to use soap/linen?
One last question on the side, does the powder (CeO or CrO) ever come off? As in, if I toss my pasted strop onto a white shirt, or vice versa, will I end up with green/yellow all over it? Or will I end up with green/yellow dust lying around where I leave my strop?

Khaos I would not put the CeO on leather. Tried and failed.
It needs a harder carrier anyway. So balsa might be good.
You can add a little shaving soap.
You only need a scratch off with your finger nail for the amount you want on your strop.
You have to protect a pasted strop with a paper to avoid cross contamination.
The paper is always put on in the same fashion.
The ChrOx comes off and leaves nasty stains all around if you don't do that.

So I should make a box for it... I thought it would be messy.