One of the hundreds of elongated skulls that were discovered in 1928 at Paracas Peninsula in Peru. Cranial deformation was practiced by the Paracas civilization (800-100 BCE) by tightly wrapping the head in cloth, during the first few years of life, in order to elongate the cranium
The brain has incredile plasticity and can reform connectivity in the craziest circumstances. I wouldn't rule out negative side effects (maybe hardcore headaches) but in terms of information flow I think the brain would be fine.