The only issue I can think of is, since it's small enough to fit inside the dipstick tube, it might be difficult to suck oil through it.
HOT oil flows like water , and the oil is best taken out hot after a long run so the detergents in the oil have picked up all the fine stuff that gets passed the filter.
Yes, I know that. My engine runs pretty cool unless I run WOT so I try to plan my oil changes at the end of a day's running. In the slip idling, I can't get the engine over 150 degrees or so.