Here is a good review of the Rodriguez article. (I did not write this but do agree with it)
Their main argument is that v-brakes necessitate a "problem-solver" in order to make them work with drop-bar levers. Thus, they contend that
rack-fitting problems and lever compatibility issues will stymie most riders. This problem is
extinct now because of the wide availability of drop-bar v-brake levers. No need for "Road V-brakes" or any type of bulky leverage-amplification device.
Also they contend that v-brake pads are too thin and wear out too quickly, but this also has been countered by modern offerings and on my current touring bicycle I am using relatively thick, inexpensive easily replaceable slide-in style Kool-Stop pads (check this link and look at the "V-type brake insert pad"
www.koolstop.com/brakes/index.php).
When I was using cantilever brakes I ALWAYS used the "Kool-Stop Eagle 2" smooth stud pads. I've compared a new set of those with the thickness of the current v-brake inserts I'm using now and the difference in
usable pad thickness is negligible: perhaps .75mm, and I'd trade that thickness for the increased braking power any day of the week. Especially in the rain. Anyhow, the replaceable slide-in v-brake pads are less expensive, less wasteful, and SO MUCH easier to adjust. I can easily take a replacement set on tour with me and negate any benefit of a marginally thicker pad.
Furthermore, the Rodriguez webpage contends that tandem riders will be facing extreme high speeds on their bicycle. They state that touring cyclist and tandem riders will be" barreling down a pavement highway at speeds of over 60mph". Sorry, but I can't remember the last time I wanted to go over 35 or 40 mph, and even then I was uncomfortable. My wife and I will most certainly not be "barreling down a 7 mile descent at an 8% grade at over 60mph". That's just stupid and dangerous. Most tandems (except for Rodriguez) have a hub brake for a reason: to avoid such dangerous situations and alleviate the strain and wear on the brakes and the rim. Anyone who is planning flying down a hill at those speeds on a heavily loaded tandem and trying manage their speed (ha!) using just rim brakes, either cantilever or v-brakes, or whatever, is bound to super-heat their rim, melt a tube, have a blow-out, and kill themselves and their partner. Period.
Rodriguez Cycles is sticking with outdated propaganda and downright sensationalistic reasoning to promote their very expensive custom $250 dollar cantilever brakes (which I personally guarantee will not stop a bike anywhere as quick as my $40 dollar v-brakes with my $25 dollar levers, especially in the rain). Worse yet, Rodriguez doesn't even include a drum brake on their bikes! What are they thinking?