Can I swap the lock out on one suspension fork for the remote lock out on another?
Yes, assuming they are both remote capable. Rockshox uses the same lockout on all the models I have seen. Should be no issue and will only take a small allen wrench. You will likely need to remove the grips, brake lever and shifter from your left handlebar. 

IF the new fork is not capable you may need a remote lockout top cap, which is a bigger question.