I decided not to post (again) on the "fuse" singularly. Reason being, I made additional significant upgrades throughout my chain. I moved all my power, interconnects and HPC over to a Colorado based company (Audio Envy). So, at this point, I can't give isolated thoughts on just the fuse.
Re: Caps --> what year is your Orchid?
Prior to the additional changes, from the Fuse, I noticed greater dynamics, staging, and also micro-details within certain (familiar) tracks that when listening carefully I had not previously noticed. Keep in mind, we are talking about at best ~10% incremental value. The fuse does not bring massive change, but IMHO, it's really positive...smile on your face noticable. For my setup, it was a worthwhile venture.
I did not flip my fuse after installing and listening. Prior to the mod... I had emailed Jiun to ask what direction the circuit flowed...so felt confident going in that I had it correct first time ...although possible I goofed (always learning).
Closing thoughts / thinking out-loud... if one was to make an investment conscious decision, I would suggest focusing investment on a great Tube first (stating obvious), and then most likely interconnects (second) prior to Fuse (third). By way of example, the recent Mullard CV4108/7308 was IMHO a significant advancement (to my ear) over the WE2C51 (1950s) which was previously my go-to tube. This list/sequence.... assumes of course Headphones are already well invested in and good-to-go