I've got sympathy for the fire-brigade's viewpoint. I've had the unfortunate experience of dealing with dogs that have been in house fires and seeing a young labrador turned crispy on most of it's body, face swollen like a balloon, blinded and still trying to nuzzle up and lick a hand while it can hardly rattle a breath: heart-rending. Just think how much worse it is for those guys when it's people or children they're pulling out.
Yeah. I have two woodburners here also. One has a straight up flue so easy to clean albeit messy 'cos access is from inside the stove. The other has only access through a flue port and then that opens into the original chimney which also has a swan neck near the top. It's a real pain to get a decent brush into that port so it'll sweep the chimney proper... and even harder to get the darned thing back out. probably the best but expensive solution would be the fancy flexible rods that one can spin with a hand drill and flail bristles (£3-400 of kit?). I can get two full buckets of sooty clinker and a vacuum bagful out of this big burner every couple of months of fulltime use and invariably need to dustsheet the whole room before i start. At least when i do it I know it's clean but as i;ve said many time shere.. if it wasn't for the amount of timber on this land I wouldnlt have a woodburner.. dusty, messy, reduce room oxygen even with vents and every time you open it to add more then you have potential for fumes or smell - and that's all apart from the fire hazard.
Oh and both badly burned labradors died - probably as much from the opiates i was pumping into them as the pulmonary oedema.
I did have one survivor of a less crispy nature - just very bad smoke inhalation and a week in an oxygen tent.