.swiper-slide {

    overflow: auto;

}

var swiper = new Swiper('.swiper-container', {

    direction: 'vertical',

    autoHeight: true

});

var startScroll, touchStart, touchCurrent;

swiper.slides.on('touchstart', function (e) {

    startScroll = this.scrollTop;

    touchStart = e.targetTouches[0].pageY;

}, true);

swiper.slides.on('touchmove', function (e) {

    touchCurrent = e.targetTouches[0].pageY;

    var touchesDiff = touchCurrent - touchStart;

    var slide = this;

    var onlyScrolling =

            ( slide.scrollHeight > slide.offsetHeight ) && //allow only when slide is scrollable

            (

                ( touchesDiff < 0 && startScroll === 0 ) || //start from top edge to scroll bottom

                ( touchesDiff > 0 && startScroll === ( slide.scrollHeight - slide.offsetHeight ) ) || //start from bottom edge to scroll top

                ( startScroll > 0 && startScroll < ( slide.scrollHeight - slide.offsetHeight ) ) //start from the middle

            );

    if (onlyScrolling) {

        e.stopPropagation();

    }

}, true);