it is alot of money mate, compared to what you need trad. but it'll pay for itself over time. just think no chance of falling/ladder slipping. i had 2 last year, not serious but its a week off work at a time, twisted ankle and a bashed knee.
if you have a van, then if i was you. i'd buy a tank for the van 400ltr ish and a backpack, so any that are gonna be too awkward for lots of hose or bad access then backpack it. but i do like working with my trolley im doing good money with, but ive not used anything else properly. but i do use my 50mtrs of microbore from the car for the odd house and i just hate it.