I'm a still shooter moving to HD. When I go on a shoot I have usualy have 2-3 lenses and or a back-up lens. Do video shooters (shoulder-mount/interchangeable lens) do the same? Or do you just go out with one lens? Also, how reliable are the Fujinon lenses (1/3 & 1/2) ? And how is Fujinon customer service?
In general I'd say no, most shooters don't have more than one zoom lens, but... film-type video folks do sometimes use primes along with their stock zoom lens, and some folks will have a 2nd wider angle zoom or 2x extender/telephoto.
Some Fuji stock lenses aren't that great, like the stock 16x on my HD-110, some are much better (and more expensive). I haven't ever had a lens problem with any of the many Fujis I've owned over the years, so i can't comment on their customer support.