Nurse Practitioner and CRNA questions.

I couldn't really post this in the CRNA thread, or the NP thread because it relates to both. After I finish my BSN, I really want to continue my education to advanced nursing. I dont know whether or not I should do NP or CRNA. They both intrigue me for different reasons, and I know their scope of practice are very different. I am interested in both. I've searched the threads from over the years and can't really find the answer to my question. So my question is, are there actually people who are NP's and CRNA's which I know they are, but is there anybody who works in both fields. I hope my question isn't confusing. I just want to know a typical work week if you do work with both your nurse practitioner certification and your CRNA certification. Or, do you just basically veer off and choose one speciality and just focus on that. I've never heard, or knew anybody who is a NP and CRNA and works in both fields at the same time. I'm new to this, so I just want some view points. So, basically is it possible to work as a NP and a CRNA. Thanks. Any info, would be greatly appreciated.