Hi guys, i have s1000 plus and i am using it with two futaba transmitters but now  i have bought new lightbridge system for it, the question is can i use my drone with lightbridge transmitter for aircraft. and another futaba transmitter for gimbal at the same time...thanks

As long as they use the same frequency (2.4 GHz) it is not safe and not recommended by DJI. Don't do that.

No, that combination would not work. For a main RC and a separate gimbal controller combination, you would want two LB2 RCs and pair them as master-slave like how you can with the Inspire 1.

Thanks guys..