There's a lot of talk about underwriting loans, but even if offered I'd be cautious.
BBVA were the only lender to offer a product with a 24 month payment holiday, and nobody has mentioned this of other lenders.
Once BBVA withdraw their product that leaves people sourcing loans from elsewhere - and it's entirely possible there will be no payment holidays. You could only then assume that this underwriting would be on a loan in which you would start making payments immediately (while you are studying with L3)
Lenders are unlikely to offer a payment holiday of longer than 12 months and more unlikely to do so at the start of the loan. High street lenders will be looking for your first payment a month after they release that money.
I just hope everyone here in their early 20s are aware with the financing of it all and how banks lend money.