According to the article, the standard housing that most RC modelers use can accommodate couplers rated for 15A (16-20 gauge), 30A, (12-16 gauge) and 45A (10-14 gauge). They also said that the coupler should be chosen based on the wire gauge and that the resistance of the contacts is 100 micro-ohms, or roughly equivalent to that of 0.6 inches of 12-gauge wire.
I also looked online and found that you can get housings in the standard Powerpole line that handle up to 180A.
Anderson Power - Standard Powerpole Family
So for brushless, here are the new questions:
1) What gauge wiring do you use?
2) How many amps should be accommodated?
In case you haven't guessed, I'm very interested in these connectors. :) The other nice thing about them is that if the housing needs to be replaced, you can actually remove the contact and just put it in another housing without having to replace the contact itself. Of course, that's assuming that the reason the housing needs to be replaced is not because the contact is rated too low for the application.