You can use a synthetic rope on a winch that has a roller fairlead. The problem is that you have to make altercations to the rollers to stop them from causing chafing and abrasion to the rope. The majority of all winch manufacturer’s suggest that you use steel cable with roller fairleads and use synthetic rope with aluminum hawse fairleads.
The choice is really up to you, but the roller fairleads will shorten the durability of the rope and reduce the strength of the rope.
Read your owner’s manual for manufacturer recommendations about synthetic rope.