Well, I did give Gandi a shot and have experienced what business hours, email only support is like.
When I created my Gandi account, I mistakenly used a shortened version of my first name, rather than the full one (think Tim vs Timothy). When initiating the transfer of my domain from Namecheap, multiple warnings appeared admonishing me to ensure my contact info on Gandi was an *exact* match for the current whois info on the incoming domain.
I corrected my address etc on Gandi to be an exact match, but was unable to change my first name. Concerned, I emailed support asking them to make the, very minor, adjustment. This happened on Saturday night. I received an email from tier 2 tech support late on Monday morning, asking me to email a copy of my photo ID and they'd take care of the change.
In the meantime, the domain transfer went through without any issue, despite the slightly mismatched name. Since I'm not keen on handing out electronic copies of my license, especially for what amounts to a typo correction in my name, I'll likely just leave things be. I am considering just using GoDaddy next time around.
If anyone has an opinion on GKG.net, I'd love to hear it. I somehow missed them during my search for DNSSEC friendly registrars and might try them instead of GD.
tl;dr Sometimes you do need support from your registrar and Gandi did not impress. Opinions on GKG.net would be much appreciated