Alright, first test drive after install. My impressions are, while I can't feel an 80% drop in spring tension (my understanding is, the replacement spring provides only 20% of the tension of the OEM), what it does provide is simply a bit better feel for where the friction of the clutch plate on the pressure plate picks up. On our stock clutches, this friction zone is near the top 25% if the pedal travel, and that seems to be a harder area to manipulate slowly and accurately with your foot/leg. For that reason, I obviously felt it improved the clutch pedal feel in initial vehicle movement from a stop in 1st, and in the 1st to 2nd shift. Definitely noticable, but I'm sure a switch to the RJM adjustable pedal would be a greater improvement. I have to say, for $17.00, you can't go wrong.
Anyone expecting a totally new feel will be disappointed, but if you want a bit better feel with clutch engagement, especially from a stop (annoying stall, anyone??), and from 1st to 2nd, then IMO, it's worth the cost and minor effort to install. If you have at least one hand, and decent eyesight, you can handle it...