No, I have not. My Touch has fed digital to my Minimax from day one. I've never experimented with its analog outs.
Also, for some reason coax from my Touch to Minimax sounded inferior to toshlink until I had digital mods done on my Touch. I think I was in the minority with that finding.
That said, both stock and modified I had the best sounding using an RCA to XLR cable from the coax into AES/EBU.