You can use any vac, wet or dry, with the KAB, because the KAB traps all the fluid. Vacuuming any liquid directly into a machine not designed for wet use is going to kill it; the fluid will end up in a motor which is not designed to handle fluid. Unless I misinterpreted your post and your statement that "I wouldn't think there's enough fluid to be any concern", I was taking you to be vacuuming the fluid into a home vac designed strictly for dry use. Just pointing out that this is definitely not adviseable.