@Deidre The lugs on the Espazzola are 90º to the handle, unlike the lugs that are on the portafilter which are offset at something like 45º to the handle, in order that the pf handle locks at 6 o'clock. This is why the Espazzola locks at about 4 o'clock when rotated anticlockwise. It would suit you and I if we could rotate it clockwise, with our left hands, to get the handle locked at 8 o'clock. But that is not possible because of the shape of the lugs.
Anticlockwise rotation is permitted by the 45º lead of the lug (RH arrow below) and clockwise is prevented by the square end (LH arrow below)
Hope that helps.