Has anyone toured Patagonia with Ayers Adventures?  Their Bariloche to Ushuaia looks like a great ride.  Probably too late for 2019, but 2020 is a definite consideration.  The segment in Chile seems to be mostly hard-packed gravel roads.  No big deal for most of you, but I'd need to train a bit.  Can anyone comment on them?
Thanks for any feedback.
Brant