Well, if you can play a 412 comfortably, you can play a 212xl, so size is not an issue.
I had a 212xl, a 212c and a 112 at the same time. The 212xl was a very good guitar, the 212c was okay and the 112 was a delight to play. I miss it. I think that would be a fun 12 string to have in place of the 412. The sound would come out of the 112 very quickly. By contrast, the 212xl was a bit slow, with a deeper voice.
Finally, I think if you needed to fill a coffee shop with music without a mic or a pickup, the 212xl would be a better choice than the 112.
That's my 2 cents.