You can definitely drip on "bridged" attys. If you look into your atty, you'll see a metal "bridge" covered by a band of mesh arching over the cup that holds the coil. There is also a piece of wick (I believe it's silica wicking) under the bridge that's supposed to pull
juice to the coil. Some folks used to remove the bridge and wick (search youtube for dewicking & debridging) so that when dripping
juice goes right onto the coil (debridging) and because sometimes attys would get a burnt wick flavor (dewicking) .
I tend to dewick/debridge 510 attys, but always left my 306's and 901's alone. YMMV