Fontal is not the same, tastes similar but melts differently from real fontina (string-like, not smoothly), so DO NOT attempt to make a piedmont fondue.
Otherwise, it is quite acceptable, if layered in polenta, or used to make chicken cordon bleu.
I think i've seen real fontina occasionally at the large coop down At the Leman Centre.... I would try to ask there.
Otherwise... aosta is only a couple of hours away...