I just did on my last test and it was awesome. Huge caveat here tho is that I’d been off the bike for quite awhile and lost a bunch of FTP… based on my first block of base, I knew I was in for a bump. So going into the test I was highly motivated to see where I could get.
I’ve had blocks in the past where I wasn’t even sure I could repeat my FTP from the previous block (burn-out, etc). In those instances, I would never want to see estimated FTP.