Yep, like someone else said, it appears to be a Winegard style antenna. Bat wing antennas are no longer used - those were the old analog style antennas, which cranked up via a handle on the inside.
It's either held down with hex head screws or square drive screws.
Difficulty in prying off the roof depends on what was used under the antenna, either butyl putty or the clay style putty.
On my AF811, the roof vent had clay style putty, which made removal easy. On other RVs I've worked on, butyl putty was used on the roof accessories. It is a real chore removing an item when butyl putty is used because it's almost like glue.
Warranty won't be applicable for removing the antenna if you take it to the dealer. The dealer will charge you to remove it.
If I were doing the project, I'd reuse the screws and the original holes in the roof. Make an aluminum plate and drill the hols in it so they match the holes of the antenna, then use the clay based putty, then Dicor self leveling sealant after the plate is screwed to the roof.
Using the same mounting pattern on the holes and clay based putty will make removal easy when it comes time to reinstall the antenna at resale time.