Corporal Joe Bauers
No matter games or life
Honesty over everything
Sleeving the cards is not that easy and maybe not even needed.
I'm pretty sure that the factory which does KDM is also responsible for the Sirlin stuff.
These cards (KDM, Codex or Yomi) are a tiny bit larger then Magic cards which means I'm unable to use KMC Perfect Size sleeves. They are thin, rather inexpensive but very durable.
On the other hand the card quality is way above Magic. I played both Yomi and KDM without sleeves and can't notice any wear.
Just my two cents...
The problem is that for many of the decks you shuffle ridiculously frequently. Even the best card-stock in the world would quickly go south.