Competence requirements are defined in 7.2 - especially 7.2b in that you are note that you're "competent on the basis of appropriate education, training or experience."
You're also required to "retain appropriate documented evidence of competence". You would need to satisfy an auditor that your awareness training to the 2015 version is documented and be able to satisfy 7.2b.
Well yeah, but 1st define the word "appropriate" (you'll find that in Appendix "A")
2nd pay attention to the phrase "...education, training or experience", the word "or" means any combination including experience "only"
3rd, evidence of competence could be very well performed audits
4th, you only need to document that which is done including awareness training (which isn't required)