All the people bragging about how they don't need certs make me laugh. As a router guy I have lost count of the number of uncertified engineers I've worked with who claim total competency yet somehow have major blind spots for things they've never implemented in production. Guess what, if you did your studies you'd at least know the basics and get up to speed quickly.
Esp in R&S the focus is often very strongly on fundamentals. I don't care if you learnt OSPF via CCNP or JNCIP both courses will teach you the fundamentals and the information is completely portable.