Actually, I do design work at a consulting MEP firm.
The company policy seems to be that only a few people are allowed to sign drawings, and they are all senior-level bosses who have been with the company a long time. They also make no distinction in job descriptions/duties between "designer" (two-year tech school grad) and "engineer" (B.S. degree) beyond giving them different titles. Either can also be promoted to project manager, group leader, VP, etc. The overall boss of the EE department is not even eligible to sit for the F.E. or P.E. exams because of his academic background.
So it's pretty clear to me that getting the P.E. license won't make any difference if I stay at my current job.
Wow that is an interesting setup for your company. When I worked as an EE for a consulting/design firm, there were lots of people that were PE's and all of them signed documents/drawings. All Department Heads, Project Managers and Senior Engineers had to be a PE and they typically signed their own drawing and spec packages. The President and Vice-President hardly signed any drawings or specs and were mainly involved in marketing and getting new jobs.
My old company also had plenty of distinction between designer, drafters, techs, and many levels of Engineers employeed there. I do not think designers, techs or drafters would ever make it past having the word "senior" attached to their title. I still say that having your PE will never be a negative for you. It just might not help you in your current job.