I had an interesting chat with a colleague last week regarding the evolution of consulting roles in the Notes industry. In the 'Good Old Days' (TM) of Notes Release 1 through R4 every man and his dog was both a System Administrator and an Application Developer. Perhaps they were better at one side than the other but you could have a chat with everyone you met at Lotussphere without encountering too many blank looks.
R5 through R7 drove a wedge through the tribe and split it into two separate camps - not quite as bad as the Hatfields and the McCoys but it suddenly seemed acceptable to wear only one hat and to plead ignorance as to what the other tribe was doing.
At the risk of becoming a "Jack of All Trades and Master of None", some of us have kept a foot in both camps by maintaining certifications in both System Administration and Application Development, but I'm wondering how long that can go on. I'm just about to embark on a one-week intensive e-learning experience with X-Pages to prepare me for my R8.5 App Dev upgrade exam followed later by a similar effort for the R8.5 Sys Admin upgrade. My point is that the Notes/Domino environment is just so d@mn big these days that no-one can hope to know it all.
I'm interested in hearing what other people's approach is to certification. Is it worth the effort to maintain a double certification? I see it as a good personal benchmark but do customers really care about such things?