I recently looked at many of the insurance companies and the main difference between LV and others 'proper' motorhome insurers is that LV and a few others only cover personal belongings up to £1,000 whereas others offer a more realistic £5,000 cover and a higher level windscreen cover. All now appear to cover original manufacturer internal fittings like the kitchen etc. in case of damage, fire or theft BUT you need to check that the manufacturers fitted roll out awning is covered.
We initially went with Comfort but then cancelled as their policy of having to inform them every time the vehicle was left anywhere unattended (other than our drive) for more than 24 hours, otherwise it may not be insured, wasn't suitable for us.
We then went with the Caravan and Motorhome Club Insurance (Devitt) as it offered a good price, a very clear motorhome policy and 'up to £5,000 for any personal belongings that are damaged or stolen as a result of fire, theft or attempted theft'. If you added up all the additional camping items, external tent/awning, mattress, isotop, brandrup bits, cooking items, clothes etc. it soon comes to well over £1,000
We were with AIB last year, but had issues getting written proof of no claims from them for our renewal so wouldn't recommend them.