...and realized how awesome it is?
Happened to me when I crafted a flourish. I mainly used DA and Silent Nightblade to do my JK runs. I crafted a flourish just for the heck of it and wasn't all that impressed with it until I upgraded it into a Grand Flourish and brought it into Tier 3 and realized how amazing it is. I loved how useful the charge is, being able to kill the healer before it puts up the bubble and pretty much killing anything that doesn't resist it if you manage to land all the hits.
I find that a lot of people are skeptical of piercing swords. Maybe because the swing-stab-stab combo takes a little practice, to aim correctly. Or maybe they try to use them on constructs (or slimes), which resist piercing.
The first time I used a piercing sword, it was truly a revelation. It was certainly the single biggest equipment advancement I've ever seen. In a couple of cases, I have convinced friends to try out piercing swords. The person always says something like, "Wow. I wish I'd tried this sooner!" It completely changes the game (against beasts and fiends).