I can't see one video on youtube of someone cleaning the filters when dirty ... i would need to see that . Also in any video they seem to right beside the user ... so you are pretty limited range wise , they are single vac ?
Im think of an old style 10 bedroom guest house i did this week ... Enforcer outside reaching 100ft up three stories with good suction , not sure how you would do aplace like that with a cfr . Narrow twisted stair , heavy machine .
So as a special purpose machine it might be alright ... but not as main allrounder machine ?