I would strongly discourage anybody from using a bulb as a fuse. If you want to use a fuse, just use a fuse. Smaller and smaller chances to blow up in your face. Neither one will actually be fast enough to protect your mosfets in case you're doing the wrong thing but is better to know the risks than to just do stupid things thinking you're protected.
I thought the whole point of the series light bulb was not to have the light bulb act as a fuse, but to take advantage of the lower cold filament resistance, and higher hot filament resistance. Yes, the effect can be too slow to protect semiconductors, but it will protect. If the current remains low, the bulb offers a negligible resistance. If a fault causes the current to increase, the bulb's resistance increases, thus limiting current.
I believe some oscillators use light bulbs to exploit this effect.