I like the Acrylic too, how viscous is it?
conformal coating is also excellent for sealing the entire board once a project is "complete" and requires no further enhancement. it's ideal for ever-changing climates where the board is somewhat exposed to the elements of things like condensation within the cabin of a motor vehicle. a lot, if not all OEM's use these type of coatings on their ECU/ECM/PCM to prevent short circuits from things like moisture attacking the PCB, and it needs removed if one wishes to modify the board! very good products indeed.