Well I guess I started this whole thing. I've got to say I'm not surprised at the variety of impressions and outcome.
Over the past 2 years since this started, I have cleaned and reapplied Silclear several times. Usually because of wire changes or a whole lot of hook up and take apart, where the contact just seemed to need a reapplication.
My system has been down and packed away for about 6 months while the house was being rebuilt. But I methodically cleaned and reapplied the Silclear to all connections about a month after I put it back together. I have a new dedicated listening space now, in the basement. I needed to tame the bass tremendously, but that's another story.
With a bit of room treatment I can still say that the system sounded transparent. But after reapplying the Silclear it definitely still took it all up a notch. Soundstage and imaging locked in and the ambience of the recording space bloomed better than it had before application.
Sorry, I don't have any experience with a long term, hands off and don't touch it approach. But I would recommend that any connection be periodically cleaned and the treatment of your choice (pro gold, deoxit, silclear, etc.) be reapplied. It's just common sense that contacts get dirty or oxidize over time, and a clean contact is a happy contact.
Enjoy,
Bob