I am a PE and a member of the NCEES exam committee for Control Systems Engineering. We served as a guinea pig for exams in other disciplines, and as such, I learned a lot about the exam process.
I suggest you first take the FE/EIT exam. Most State boards require it (or equivalent experience), and it will prime you for the PE exam. It is all multiple choice and you are provided a manual with all of the calculation and information you will need. While you can't take this manual into the exam, they will give you a copy when you sit for the exam (don't want any "extraneous notes" brought in). It is highly recommended that you find a course at a local college to prepare for the exam.
It is possible in some states to take the PE exam the day before the FE exam (PE is given on Friday), but this is not recommended. Wait 6 months to take the PE.
Most boards require you to document your experience in great detail. You indicate what you did, who your supervisor was (the board may contact him/her), describe a few projects, and show that you have progressed upward. You need to show ALL of your time, even when you may have been out of work or doing non-engineering type work. You will also need to gather recommendations from PE's and non-PE's that know your work. Most boards will have you send forms to these people, including past supervisors.
The Control Systems exam was the first to present 8 mandatory questions, with no choices of questions to answer. The Electrical exam (I think you referred to) has (had?) something like 24 questions (12 morning, 12 afternoon), of which you picked 8 to answer.
The NCEES is heading toward all multiple-choice tests, since they're easier and less subjective to grade. They have also considered breaking up Electrical into smaller sub-groups, like Power, Circuitry, Computer, Control Systems, etc. It is a very broad field, where few are well-versed in all topics. They might look at the other "major" disciplines, as well.
Whether or not they adopt new exam formats is somewhat up to the boards. The same exam is given everywhere on the same day, which will probably not change.
The NCEES is also striving to make the PE exams practical, and not as strongly academic as they tended to be. This is good, especially in your case, for it tests the ability of the examinee to solve real-world problems. You can't learn that out of a book.
You may want to find a study course for the PE. It serves as a refresher and will give you an idea of how much you're going to have to study to pass.
One last thought: The exam process developed by the NCEES has been designed to determine who is "competent" as an engineer in a specific field. I think they do a very good job. With your experience, you should have no problem passing. Good luck!