I'm with you Foxhole trying to empty through the inlet hole would be a pia,buy my bags off Amazon ,slit the end open when full and reseal.Can normally get about 4 goes at that before using a new one ,no use spending money that you don't need to.
I had great results from using the water based Zinsser 123 bullseye.Which was rollered over oak kitchen cabinet doors ,then I used Bedec's Multi surface paint.Here's the result.....
JB Weld SteelStik™ sets in 3-5 minutes and after 60 minutes, can be drilled, tapped, machined, ground, filed and painted. SteelStik™ cures to a dark grey color, is rated at a tensile strength of 4000 PSI and will withstand temperatures up to 300ºF
I took my doors off and worked on them in the garage ,this was mainly because of the dust from sanding.I don't think rolling insitu would have been a problem as the paint goes on thinly with the roller so don't get any running.
I've nearly finished the revamp of my kitchen now, biggest job was tiling the floor because I wanted the tiles up to the edge and not just to kitchen units.Led tape lighting and tiling under the wall cabinets and I'm finished.
Glad the info above might be useful.