We recommend only using the product as intended. "Inkjet only" materials may not be able to withstand the heat of the laser printing process. The high temperatures could cause the facesheet to melt or the adhesive to ooze, leading to jamming and printer damage. For "laser only" materials, they likely won't cause damage to your printer, but the ink may not dry properly. This can lead to smudging even after an extended drying time.
