I was browsing Amazon randomly [*], and ran across what looks like a Toradora VN, to be released on April 30 2009 for PSP. Tempting. But what if I buy it, and there's no Ami path? /wrists
[*] Actually, I caught an ad at sidebar of Akibaos (NSFW ads). But this seemed like such a small lie.
UPDATE: Aroduc threw a bucket of water on my interest by reminding at #animeblogger that most tie-in games are trash. Toradora Portable is made by Bandai-Namco, which is a conglomerate of groups with varying track record and varying budgets. Most likely the game is not worth the bother.