My resident UT permit allows me to conceal in, I believe, 36 states, but because there is no live fire requirement, states like Nevada and New Mexico do not recognize it. As of mid 2013, Idaho now gives the option of getting an "enhanced" permit that requires 8 hrs of legal and live fire training. With that addition, I will pick up an additional 5 states (41 total +/_). This enhanced permit alone may end up getting more reciprocity than a UT permit. I don't travel back east so my reason was to conceal in Vegas. Even though open carry in Vegas is legal, pushing through a thousand foreign tourists on the strip on a Sat night with an exposed .45 is not the best weapon retention strategy, not to mention fear mongers calling the cops. Also, casinos will ask you to leave so where's the fun?
The most difficult task for most is going to be finding a training class close enough to take.