For my FTTP install via OH;
Telegraph pole is on other side of street, fibre optic cable was fed along existing copper line to hook support at first floor, cable was then routed straight down to a grey Openreach panel, and then cable was routed under bay window and neatly drilled above the Virgin Media Socket point.
So my external FTTP install cabling is in a L/J-shape, the cabling to the grey panel needs to be straight, but the other stuff is quite flexible for install.