Yes, the texture is certainly different. Hand-whipped and mixer-whipped cream is denser and fattier, while pressure-whipped cream is lighter and liquid-ier. Also, pressure-whipped cream loses its shape quite soon after being expressed, while hand-whipped stands firm for quite a while after whipping.
Moscafj had the right keyword: cans of whipped cream are simply dispensable versons of permanent syphons. So you can buy one of those, then whip by hand, and compare the results side-by-side.
The taste is not changed, with or without flavorings. Although there are not many flavorings that you can add to cream without preventing it from foaming.