What should sourdough crumb feel like?

Toast

Should it feel dry when you touch it with your finger? Sticky? Tacky? Moist?

I ask because each time a loaf has a tacky crumb to the touch I assumed it was a failure.

But I bought a sourdough loaf the other day for an astronomical price and the crumb was tacky.

 

So what should it be like?

 

Thanks 

A sourdough is moister than a standard loaf.  But it still should be fully baked--even when it finally registers over 200 degrees, it still needs extra time in the oven.

SOL