>>23305070
Not only is Byarlant Custom at the end of the day still a Titans suit, but that's also a distinction without a difference. Titan suits are Federation suits and the TR Plan encompasses all of it. Hell, through BUNNyS you can even combine it with Neo Zeon gear.
In short, resounding YES.
Incidentally, it's explicitly shown the Icarus unit can have the Byarlant arms attached.