the problem with the leaf blower is size, weight, awkwardness and chance of damage.
from my experience, the leaf blower will produce similar air flow as the vac n blo. BUT to have that power contained in a small package of a flex hose vs. a leaf blower makes a HUGE difference. Consider the following
- which would you prefer to work/walk around your vehicle with?
- do you want to risk waving a 3' hard plastic tube around your vehicle?
- will it cost more to fix/correct a ding, scratch or galge from waving around the leaf blower than the cost of the vac n blo?
It applies the same as a paint thickness gauge. If you have one, and use it to measure paint, it will save you from attempting to polish beyond the thickness of a super-thin clear coat. If you dont have one, and polish beyond the thickness of the clear, it's going to cost more to correct than purchasing the correct tool to do the job.