The only 1911's I know of anymore that don't come with lowered and flared ejection ports are replica's like Springfield Armory's WW II models. It used to be common back in "the old days" to have the work done but it's standard fair for the guns to come from the factory anymore with the work already done. Basically all the lowered and flared ejection port does is keep the brass from getting dinged with a little crease. Even being creased the brass is still fine for reloading.
Congrats on your purchse of the 97
Regards Sonny