Basically this installment type of loan, the style of investment where you borrow money to invest on a valuable asset, and be paying off your debt bit by bit from your pay check is called good debt, though it's actually good no doubt, but it depends on the kind of job you are doing, like how secured is the job, like job security and how huge is your salary to cover up for all expenses including emergency fund aside without you falling back to your investment at some point.

So what am trying to say is that taking this kind of loan can be very good only if their is job security in your place of work,  the interest rate is extremely low, and the salary is huge enough to offset all expenses including an emergency fund aside after paying part of the money you borrowed through installment, and lastly, when investing in Bitcoin through this means, it's mandatory that you have to be on the top of your game when it comes to planing and budgeting, because one wrong spending can disorganize your financial plan for the month if your emergency funds is not huge enough to carry the burden.