Jaff - To answer:
Do they offer better protection? - Yes, for Structural fires definately. They offer higher leg protection, and alot more protection if the foot/leg was to go through a floor or roof. - Obviously the protection is also greater for rural jobs, but that goes into the next question, would they be more comfortable for rural incidents? Probably not. - Well, no. I wouldnt wear them for a rural incident.
Do they offer more comfort? See above.
Do they offer a cost benefit,compared to what is already supplied? Comes to the old question, does cost outweigh safety?.. - For internal/Structural firefighting, my personal opinion (based on experience), they offer excellent protection and for structural/internal firefighting, I wouldn't go past them.. In regards to what is already supplied.. Well, I guess you can only aswer that if you put your foot through a floor and suffer 3rd degree burns because your boots didnt offer any lower shin coverage.. Its a 'Tomatoes Tomato's' type debate..
What are the cost differences between the two different styles? Pick up your Taipan / blundstone / comfort wear / Redback - Then look on here
http://www.code-2.com/FIRE-HUNTER-AF-p/501601.htm .. You can see the differences etc and can see why they are a far more superior piece of equipment for structural / internal fire related incidents.
Are they "needed" because our paid brothers have them? No. But if we are volunteering to put our lives on the line, should we have the best out there for the job?.. Not for me to answer, but I have my opinions.
In closing, they are an excellent boot for wearing while inside structure fires / internally fighting fire. - Does every BA member need a set?.. No. - Would it be nice if every BA member had a set? Of course... - If we were allowed to wear them, would "I" buy myself a pair after wearing them already in my current profession and knowing what they offer? Definately..
Guess its up to everyone to make up their own minds.. - But at the moment, I don't think they can be worn for CFS duties, so I guess the decision is kind of already made..