I presume from you post that, since you have no intention of spending the money, that you are doing this strictly for FICO reasons to add an installment loan to your credit mix, and to establish a prior installment loan history for future manual reviews of your CR.
Strictly from a FICO perspective, I personally see little advantage in spending $93 just for this reason alone. As soon as you open the loan, it will probably add an inquiry to your report to get the loan, which will hurt your score for 12 months, and will give you a new TL with zero credit history, which will negatively impact your avg length of credit for a while to come, particuarly if it is not already high. Sure, you will get some brief benefit for credit mix, but if you then close it out in 6-9 months, that credit mix will be gone. While open, it will give you a high intital %util on installment util.
IMHO, the disadvantages of opening an account not needed far outweight the minimal advantage and short-lived improvement in credit mix, which is a minor art of FICO. And it will cost you $$. I dont see it.