You may be right about GoG. They're either busy or they know that a Mystery Dungeon-ish roguelike won't sell enough to be worth the trouble.
About GG, it was Alex that contacted me, but the Skype session had me asking a couple of basic questions with no responses in 20/30 minutes. I was puzzled about the whole Skype idea anyway -- email is better for this sort of thing. Just bugs me that they were the ones who reached out to me first, not the other way around.