NOT CORRECT.
According to this site's reciprocity charts ...
Concealed Carry Permit Reciprocity Maps - USA Carry ...
If you have an Illinois or Utah ~ resident or non-resident ~ permit/license, you can carry in Indiana,.
However, Indiana issues a License To Carry Handguns, (NOT A CONCEALED CARRY PERMIT!),and INDIANA DOES NOT SPECIFY concealed or open carry. So, with my Indiana license, I can conceal, or not...my choice...but, the State says that carrying 'openly' could be alarming to certain people, and urges that we keep the handguns concealed.
I know of no issue concerning the number of weapons that can legally be transported...
Link Removed
Also, just as an FYI, I believe that you must honor any "NO GUNS" signs on any private properties, such as stores and the like, or risk being charged with criminal trespassing.... (no, I don't remember off hand where I saw that, but ... I wouldn't test the issue if it arises.
Hope that helps