I just got Arch Linux running on my TK1 this week and I have to admit, it is looking very promising. I can’t take the credit for getting it running, but I followed this post http://archlinuxarm.org/forum/viewtopic.php?f=49&t=7493
I have been wanting to load arch on my TK1 since i first got it. I have been moving away from using debian for the last year, but was hesitant with the TK1 since there wasn’t any official how to. Well I can honestly say it was much easier than i thought. I still am going to have to make some minor kernel tweaks, but so far its looking good.
My entire reason for wanting to go to Arch on the TK1 was their AUR repo and their multiplatform-ARMv7 install. Last night i got XBMC 13 and Mythtv up and running.