@nantucketlit @hyde @thorstenzoeller @amin @eclecticpassions @birming @gumnos @ed1conf
It's a lot more usable than you'd think, particularly nvi.
#ed as a main editor does take a bit of mental prep, but it's mostly quite usable. ;)
I don't even miss #vim's column select mode. It's quite easy to implement with basic substitutions. ;)