My crew might do a bit more than a bit of skimming, for a bit of water I agree. But the quest for a paperless office is the same as a bucketless jobsite.
Water butt outside. Fill dabbing or hardwall tub maybe skimming bucket with this device, if butt is inside on first floor you can add 100l at a time without the stress of an overflow, carrying and spilling water about the place might be a thing of the past, if it's crap so what! You gotta try and improve the situation, might be called progress, in other trades.