@Justin Montoya You don't have to be licensed in SC to buy or sell your own properties (or manage your own properties) without a license. You should disclose that you're licensed in another state just to keep yourself out of hot water if you were to get sued for anything that were to occur during the transaction.
The license gets involved when you try to assist anyone ELSE with a transaction or try to collect any sort of compensation from a transaction. Most investors that get licensed do so in order to get access to the MLS and and so they can legitimately collect a commission out of transactions to offset the closing costs.
If you want to just hire buyers' agents, you wouldn't have to involve your license. How much of the commission they get is between the buyer's agent and their broker. If you were too collect any sort of referral fee for these transactions, those checks would have to be sent to your Utah broker, though.