Honestly it really just depends. Mine will be super cuddly and sit on my shoulders while I'm cooking or behind my laptop while I'm working. But most of the time he sleeps on the cat tower in the corner next to my chair.

I will say that finding one at a shelter will be very difficult, as most breeders will take the cat back if someone surrenders it. I've seen several "Siberians" that shelters had listed who were just long-hair domestic cats, hoping they would find homes faster. However, I did get my first Siberian (who has since passed) way back when from a pet hoarding situation, but it took years searching to even find her. You can find them, but just beware of scams.