don,
that was my impression about effectiveness. The BrakeLok does come in three configuartion ( one similar to the integrated system with the caliper like you have) : http://roadlok.com/index-one.htm
Folks have been pretty helpful on information about fitment with different calipers and rotors. Looks like a good engineering idea, but you know that sometimes what looks good doesn't work work a cr*p! john
John, it does work. Simply and effectively (which are what you need to force yourself in to the habit of using such a device).
The only problem I had was shared by at least two others. The ostensibly "universal" fit for that line of holes around the rotor wasn't as universal as they'd like you to believe.
I had to mess around for bit working a series of the holes in the rotor just a bit to get them to accept the pin. The tolerance is surprisingly close. I remember at least one other person who couldn't get the pin to engage in the rotor and was able to solve simply be loosening the caliper again and taking advantage of every little big of wiggle/tolerance/slop in the attachment.
Apparently those three of us were the exception rather than the rule. Don't get me wrong, in the end it wasn't a big deal. It was just more of a "deal" then the mftr would let you believe.
Here is a thread discussion and illustrationg the alignment problem. This was with the RoadLok as cast together with a caliper; not with the auxiliary mount you're considering. Might never present itself with your mount. But forewarned is forearmed.
http://www.cvoharley.com/smf/index.php?topic=13054.msg203467#msg203467