For those who have been wondering about what a chloride contact paper looks like in something other than amidol, here are a couple of prints on Azo G3, the top in Ansco 130 (1+1) 3 min. and the bottom in Dassonville D-3 (1+15) 6 min. Dassonville D-3 is an autotoning developer the same as Ansco 115 and Edwal 106. The higher the dilution, the warmer the result for papers that it works with. Azo G3 in D-3 (1+7) gives a nice warm black result, just slightly warmer than Ansco 130. I haven't tested it, but 130 might do the same at a higher dilution.
The prints aren't perfectly flat, so there's a little glare, particularly on the bottom one.
The results I'm getting with Azo in Ansco 130 are very close to amidol, as others have suggested, but amidol gives better waterbath control. When I get a chance, I'll see if I can make some comparison prints with amidol and 130 and post them. A solution for those who are concerned about the cost of amidol might be to try Ansco 130 first, and then mix up a batch of amidol when a waterbath is needed to reduce contrast.