If they fit tracker, not only does it -show- "lack of trust", I think there is a valid arguement that it -proves- "lack of trust", and it doesn't matter when or how they do it.
I think everyone should be aware that people almost always expect others to be thinking the same way they do, so someone who is often considering how to work less expects everyone else to be considering how to work less, someone who steals expects others to be considering how to steal, someone who is honest and hard working expects others to be honest and hard working.
The method/timing of the install may have as much to do with management not wanting to create any -extra- friction as it does with trust.
I still have never seen a valid side by side comparison of the costs, strengths and weaknesses of the different available tracking systems, to be able to make an -informed- decision about the quality/pricing and what is my boss getting (to be able to look over my shoulder and second guess me) for the money my sweat earned for them. I have also never seen any ROI numbers/arguments that do not include the phrases "hard to quantify" unless they appeal to the argument that the customer will always complain that the tech took too long or was not really on site that long, and the tracker can prove they were on the site that long of a time frame.
I would also like to note that "lack of trust" should not really be considered a negative thing, since blind faith (which seems to me to be the opposite of lack of trust) qualifies as rushing blindly off a cliff.
To me, "lack of trust" more qualifies as "question everything" and/or "critical thought".