Perhaps someone out there has gone thru the hoops of switching from certificated to experimental. I would think that you would have to have some significant reason for doing this.

Lots of people have gone from Standard to Experimental, and the hoops aren't complex at all. You just request to change your Certificate of Airworthiness, get an inspection and new Operating Limitations and file an annual Program Letter with your local FSDO. I am probably going to do that this year, primarily so I can do more of my own work on the glider and also to take advantage of the simpler and cheaper "meets 14 CFR 91.227 requirements" GPS source.

Now, the big caveat is that it is hugely complex and difficult to go BACK to Standard Type from Experimental.