I've went through a short sale in June 2007, and it was reported to all 3 bureaus.
even with the negative information on my report, I was able to get approved for a handful of AMEX Plat/Golds and Chase cards over the year with no issues. I've never been denied for a new credit card.
4 years after the short sale, my score is now around 640.
The fact that TC610 was able to get so many approvals after a short sale, should make you feel much more hopeful.
I think the keys, are to keep all other reporting spotless, and utilization low. I have read that the major creditors that we often use (Chase, AMEX, Citi), use their own proprietary scoring models, that are tweaked for credit card repayment probabilities. They do not just use your generic FICO score. This should be good news in your case, as your proprietary "credit card risk score" will most likely be better than your generic FICO score. I wouldn't be surprised to see you still able to get approvals, not too long after you take the short sale hit to your credit report.
And I would tell your short sale expert, to negotiate "paid as agreed" credit reporting, as part of your offer. They probably won't go for it. But, offer an extra $1,000 out of your own pocket, above the short sale price, to your existing mortgage holder, in exchange for positive credit reporting, and they might.
Lastly, you can hope that they screw up the credit reporting in any little way, then file an arbitration for erroneous reporting, then settle the arbitration with them in exchange for positive reporting. The arbitration/lawsuit route is a pain in the ass, but if you are still getting denials in 6 to 12 months, it is probably worth the hassle and research time.