Also, how close is the antenna to the amplifier?
Open: probably not good, because of the energy stored in the choke. Same is true if gate drive suddenly falls. If the impedance changes slowly instead, then open is okay.
Short: fine, if the supply is current limited (you need a constant current source to drive it, and no, a fuse isn't enough current limiting). If not, then |Z| must stay above the design minimum.
Between those, the phase angle can be resistive to inductive without much consequence.
Tim