Florida - Only recognizes states with which it has a written reciprocity agreement. I do not see anything in AB 35 that is a deal killer for FL because the WI Law is patterned after FL and AZ. However, we must wait and see what WI DOJ does. (Folks should keep in mind that reciprocity agreements take time and while DOJ has a clock for saying which states WI will honor, no similar clock exists for WI DOJ forming reciprocity agreements with other states.)
South Carolina - You must own property in SC to apply for a non-resident permit. Proof of "residency" consists of sending a document signed and notarized by the taxing authority where your SC property is located. (I wonder if somebody in SC is willing to sell me 1 square foot of land.)
Nevada - Nevada permits are easy to get, but you must take the training and qualification shoot in Nevada. You must also apply in-person and be photographed and fingerprinted by a Nevada Sheriff (or in Las Vegas by the Las Vegas Metro Police Department) The Nevada permit is hard to get if you are not a good marksman because the qualification shoot is the same as for a new FBI Agent. (B-127 law enforcement target and 70% minimum score. 6 shots @ 3 yards - 12 shots @ 5 yards - 12 shots @ 7 yards, but not timed) ) Up until July 2011, you had to qualify on every make and model semi-automatic pistol you wanted to carry. Now, qualification on any one semiautomatic pistol allows you to carry any semi-automatic pistol. Same for revolvers, but you must qualify separately on revolvers. Derringers are a "revolver" under NV law. For those wishing a NV permit (and a trip to Vegas), I recommend
www.acalculatedresponse.com for the training. A husband-wife team will meet you at your motel, conduct the NV training, supervise the range shoot, and all for $150 per person (discounts for more persons). You will need to have a cashier's check for about $101 as Nevada does not take cash or plastic.
Maine - New Hampshire - South Carolina - Colorado - Florida - Michigan - ONLY honor resident permits. Of these, only Michigan honors all states resident permits. MI & CO, will not issue to non-residents. NH issues permits to residents for $10 and non-residents for $100. ME will issue to non-residents, but ME has very limited reciprocity and the permit process is not user friendly.
Hope this was useful.