Ok. 24 hours with the machine, only about 12 hours doing stuff with it.
The keyboard is very stiff, and and it is louder than I expected since its quietness is touted.
Fans run crazy in clamshell when installing stuff in Bootcamp. Speaking of Bootcamp, getting the eGPU to work as a plug-and-play device is odd. While I'm in the luck of nothing have a dGPU, the T2 stuff makes things more difficult. Also, the way the ports are configured with the machine, apparently the only port that works is the lower left. Once I read about all that stuff, it seems to be mostly working ok. (Most instructions for this stuff either assumes you have an old MBP, or a 15-inch. Not a lot of stuff for just 13 TB MBPs).
Performance is crazy good. I'm running stuff at the highest settings. Haven't had a chance to test a lot of things, but it's amazing so far.
Migrant Assistant was odd. All apps were damaged last night, but after some restarts today, most of them started working. Looks like everything did get moved over, except for some stuff like my hosts file (which I'll just move over via a flash drive from my iMac). I was hoping EVERYTHING would move, but it looks like some stuff just didn't. Also, Launch Pad folders didn't carry over, so I had to rearrange things, and the menubar got reset to the default.
Also, I wish it prompts the user for some things it can't do on its own, like a "You had FileVault enabled on your other machine. Would you like to enable it now?" for stuff like that.
One thing that Migrant Assistant did move over, or create, is a user login called "MacPorts". Yes, I had MacPorts installed on my old machine, but it didn't have a user account assigned to it, and it doesn't appear in the System Preferences; I only see it as a login option. I have no idea how to get rid of it now.
Since I am going to use this in clamshell mode quite a bit, I'm going to get a dock so my desk looks a little cleaner than it does right now since I have a SSD drive plugged in just flopping around because the cable is too short to hide it from my sight.
I dunno, I've been bugging you all with questions about this, so if anyone has any for me, let me know and I can try to test or do things.
Edit: Surprise surprise, but none of my Safari extensions carried over, and 1Password's one isn't working for me now.