I couldn't stand it, I had to run home and plug 'em up.
Quick observation:
I play finger style (no slap) so keep that in mind.
Build quality: Top notch. I was actually surprised at how tight and well finished these cabs are. No offense Duke, I knew you had a reputation for quality, but these things are SOLID.
Volume: They are loud! I could easily do my normal gig with one (but 2 is more fun). I can't think of a gig in the past several years where a pair of these cabs would have any trouble carrying them.
Tone: Way different from my GS112s. Much more mids (which is what I was trying to achieve). Tighter Lows. Takes EQ very well. The 3" driver does a great job. I love the mid presence of these cabs.
I tried the following: 1 cab + Monique. 2 cabs + Monique. 1cab + TH500, 2 cabs + TH500. Vertical stack, Horizontal stack. Ports open, Ports plugged.
With Monique, I couldn't get a bad tone out of it. But that is the consistent experience I've had with Monique. However, with the mid presence and tight bass, I feel that the EQ appears to make more difference. You can readily hear the EQ changes better through the 1203s.
With the Tone Hammer 500, very different EQ settings. I don't have to use extreme EQ settings to get my tone. The Hathor's take bass EQ boost much better than the GS cabs. A great, light package.
The vertical stack sounds great. However, the horizontal stack was just fine. Based on the horizontal stack in my music room, I wouldn't have any hesitation gigging with that configuration (This could change on a stage).
Ports: Again, I was pleasantly surprised at how musical the cabs were with the ports plugged. Based on some peoples remarks about sealed cabs, I thought I wouldn't like them plugged. Nice option!
Only about 50 minutes of playing, so I still have a lot of work to do. I try to be objective when I get new gear. It's exciting to get new stuff, but gear is a tool. I try to skip the honeymoon and focus on a long term relationship.
It's gonna take a while for me to get used to these cabs, but that's with any gear I purchase. I have to re-adjust myself to the nuances of the new stuff.
Got a busy weekend planned, hope to get more time to spend with it later.
Oh, and I agree with morebassbaby's assessment of the cab.