I grabbed Cold Steel during the last sale, but still haven't booted it up. I've also have Muramasa waiting to be started for the first time. I seem to be worse on Vita for buying games and not playing them than I am with regular consoles.
Also, Henkaku has moved from homebrew to full pirated games. It's looking like the system is getting cracked open more and more by the day. I haven't tested any of the piracy stuff, but it's nice to know that it's being worked on if I ever want to turn my Vita into some kind of emulator/piracy machine. Like spronk mentioned above, you need to stay on 3.60 firmware if you want to utilize any of this stuff going forward.