I previously assumed (after recalling reading about it in the past somewhere) that Rlc. Memoria Helen Brown 'Sweet Afton' develops spikes in 'sheathless' mode.
The previous flowering was in sheathless mode.
But it looks like the chances of developing sheath isn't zero for 'Sweet Afton' --- which is nice to know.
Hopefully a flower comes out of this sheath later - and will upload /share any flower pics from this one in this thread.
Google drive links (higher res) :
Pic 1 link
Pic 2 link
Pic 3 link
