You can count on Bank of America to not report limits for their Visa Signature cards.
Agreed and I can confirm JPM Select and BML (well, Newegg anyway) are NOT on my credit reports; no balances, no credit limit, not even the hint of a tradeline. I used to have a Radio Shack store card that was hidden as well.
BoA World MC does report limit and balance, however, that was through bank offered upgrades formerly Platinum Plus so maybe that is why stats are reported.
Getting a hidden trade line with no AF is probably not going to happen. I certainly think the $95 or whatever I pay for the JPM is worth the hidden trade line.
Pretty sure the AF for the JPM Select is $95.
Also, as far as its difficulty to get, you need to be either a JPM Client or a chase private client (or something like that, they have like 10 different levels) for the palladium as well. Last I heard, you had to have over a million with them for the palladium, but people used to say you needed to have 30 million+ , not sure where exactly it stands now.
You used to be able to get away with getting both the JPM select and palladium without really meeting any of the requirements. Now, for the palladium at least, a private banker (most likely your private banker) has to endorse the application in order for it to be even considered (AFAIK)