So you're saying that instead of him installing an add-on, pressing a key, and being done with it, he should instead download and install VCE, figure out how to use it/events in general, figure out what the events to make a speedometer are, debug whatever he did wrong, and go through the process of placing a brick, applying the events, and fixing any mistakes every time he joins a different server that hopefully allows building?
Seriously, VCE is cool and all but it isn't the answer to everything.
Oh silly, it's not that hard!
onActivate > Self > stateFunction > Loop
onActivate > Self > callFunction > Loop
onFunction > Self > callFunction > Loop (Delay of 33ms)
onFunction > Client > centerPrint > <var:pl:speed>
You make it sound harder than it is.