Brant gave some interesting facts about the El Guapo design on shedfire.com, have a read:

Whichever hole you’d prefer. It’s up to you.

That’s right. The El Guapo design has a “rocker fix pivot” as Linkage calls it, that allows for you to select to have either a more linear or more progressive suspension action – but without affecting the overall travel of the bike.

The forward progressive position does raise the BB a few mm when it’s at rest, but the bike sags a bit further into its travel when you’re sat on it.
We’re all running around with our shocks in the progressive position and love the squish. If I was doing faster more “saddle up” XC work, then I could imagine the linear position would be better.

You can also tune the progression by shimming the aircan with rubber shims. But that’s harder than just swapping a rocker position.
Take care with the allen bolts as they are alloy. And of course, use a bit of loctite, or keep an eye on them, or they may drop out. Ed had that happen in France and we have to rob a bolt from a street electricity box thing.

So – ramp up, or linear. Choose your hole. Maybe we should colour code them. Pink and Brown?