RBS Bank switch query - does NatWest student account stop me from getting incentive?

I opened a student account with Natwest a few years ago and received £100.

The terms of the RBS switch offer say you must not have received a "switch incentive" from any of those banks. When I opened the Natwest account, I didn't switch from anything.

Would I be able to switch from Chase to RBS and still get the incentive?